DATED 17th May 2000
                               -------------------



                           Biorex Laboratories Limited


                                      -and-


                           Glycyx Pharmaceuticals, Ltd






                                    AGREEMENT





THE INFORMATION HEREIN MARKED BY [*] HAS BEEN OMITTED PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT FILED WITH THE SEC.


                                    CONTENTS
                                    --------




                                                                                                           PAGE
                                                                                                           ----

                                                                                                      
1.    DEFINITIONS............................................................................................2
2.    REPRESENTATIONS AND WARRANTIES.........................................................................6
3.    GRANT AND ASSIGNMENT...................................................................................7
4.    SURVIVAL OF ORIGINAL AGREEMENT.........................................................................9
5.    PAYMENTS TO BIOREX....................................................................................11
6.    CONFIDENTIALITY.......................................................................................17
7.    INDEMNITY.............................................................................................19
8.    FORCE MAJEURE.........................................................................................21
9.    ASSIGNMENT............................................................................................21
10.   MISCELLANEOUS.........................................................................................21
SCHEDULE 1...................................................................................PATENT ASSIGNMENT
SCHEDULE 2...............................................................................TRADE MARK ASSIGNMENT


                                       2

This Agreement is made the 17th day of May 2000

B E T W E E N:

(1)      Biorex Laboratories Limited a company incorporated in England and Wales
         having its registered office at 2 Crossfield Chambers, Gladbeck Way,
         Enfield, Middlesex, EN2 7HT, England ("Biorex"); and

(2)      Glycyx Pharmaceuticals, Ltd. a company incorporated in Bermuda having
         its registered office at Milner House, 18 Parliament Street, Hamilton,
         HM12 Bermuda ("Glycyx").

W H E R E A S:

A.       By an agreement dated 17th September 1992 between Biorex and Glycyx
         (the "Original Agreement"), Biorex granted to Glycyx an exclusive
         licence to make, have made, use and sell and have sold certain products
         throughout the entire world excluding the United States of America,
         Japan, Korea and Taiwan.

B.       Shire Pharmaceuticals Group plc ("Shire") wishes to acquire a fully
         paid up right to manufacture, market and sell products licensed to
         Glycyx under the Original Agreement in certain European countries as
         specified in this Agreement (the "Shire Territory").

C.       Accordingly, Glycyx and Biorex wish to amend the Original Agreement to
         remove the Shire Territory from the scope of the Original Agreement and
         to enter into this Agreement in respect of the Shire Territory.

D.       Under this Agreement, in return for a share of the consideration to be
         paid by Shire to Glycyx, Biorex is willing to agree to:-

         (i)      assign to Shire its relevant patents and supplementary
                  protection certificate subsisting in the Shire Territory;

                                       1


         (ii)     assign to Shire relevant national trade marks subsisting in
                  the Shire Territory;

         (iii)    assign to Shire relevant Community Trade Marks subject to a
                  licence back in respect of the European Union countries
                  outside the Shire Territory, to enable Biorex to sublicence
                  the same to Glycyx; and

         (iv)     license to Glycyx certain know-how in the Shire Territory to
                  enable Glycyx to sub-license the same to Shire.

NOW IT IS HEREBY AGREED AS FOLLOWS:

1.       DEFINITIONS


         For the purposes of this Agreement, the terms defined in this Clause
         shall have the meanings specified below:

1.1      "Affiliate" means any corporation or other entity which controls, is
         controlled by, or is under common control with, a party to this
         Agreement. A corporation or other entity shall be regarded as in
         control of another corporation or entity if it owns or directly or
         indirectly controls more than fifty percent (50%) of the voting stock
         or other ownership interest of the other corporation or entity, or if
         it possesses, directly or indirectly, the power to direct or cause the
         direction of the management and policies of the corporation or other
         entity.

1.2      "Approval" means the grant by the relevant regulatory authority of a
         marketing authorisation permitting the commercial marketing of a
         Product in a country in the Shire Territory and the approval by the
         applicable regulatory authority of such country of the Product for
         reimbursement under its national health and welfare system and pricing.

1.3      "Assignment" means each of the assignment of the Patents in the form
         contained in Schedule 1 and the assignment of the Trade Marks and the
         Community Trade Marks in the form contained in Schedule 2 and
         "Assignments" means both such assignments.

                                       2


1.4      "Astra" means AstraZeneca AB (previously known as Astra AB) a company
         incorporated under the laws of Sweden (company registration number
         556011-7482) and whose principal place of business is at SE-151 85
         Sodertalje, Sweden.

1.5      "Balsalazide" means 5-[4(2-Carboxyethylcarbamoyl)-phenylazo]- salicylic
         acid disodium salt dihydrate or other salts and any prodrugs, analogs
         and isomers thereof.

1.6      "Biorex Initial Fees" shall be as defined in Clause 5.2.1.

1.7      "Biorex Transfer Fees" shall be as defined in Clause 5.2.2.

1.8      "Community Trade Marks" means the community trade mark "Colazide"
         registered number 267930 and the community trade mark "Colazid"
         registered number 000501759 both registered in the name of Biorex.

1.9      "Consideration Shares" shall be as defined in Clause 5.2.3.

1.10     "Cost of Goods Payments" shall be as defined in Clause 5.6.

1.11     "Effective Date" means the date of receipt by Glycyx' Solicitors of the
         Initial License Fees from Shire.

1.12     "Glycyx' Solicitors" means Covington & Burling, Registered Foreign
         Lawyers and Solicitors - London of Leconfield House, Curzon Street,
         London, W1Y 8AS.

1.13     "Initial License Fees" shall be as defined in Clause 5.2.1.

1.14     "Manufacturing Technology" means all methods, processes, designs, data,
         procedures and other information owned by or licensed to Biorex or its
         Affiliates during the term of this Agreement that are reasonably
         required for pilot production or commercial manufacturing of Products,
         including, without limitation, final quality assurance-quality control
         procedures, manufacturing procedures (including conditions, times,
         temperatures, pressures and rates), product and raw material
         specifications, and other

                                       3


         technology related thereto, including all patent and other intellectual
         property rights thereto.

1.15     "MCA" means Medicines Control Agency, the UK Regulatory Authority
         established under Section 6, Medicines Act 1968.
1.16     "Milestone Sums" shall be as defined in Clause 5.3.1.

1.17     "National Trade Marks" means the trade mark "Colazide" and other marks
         used in connection with the Product in the Shire Territory and
         registered in the name of Biorex as trade marks within the Shire
         Territory as listed in schedule 1 to the Assignment contained in
         Schedule 2 of this Agreement, excluding the Community Trade Marks.

1.18     "Original Agreement" means the agreement dated 17 September 1992
         between Biorex and Glycyx as subsequently amended by the written
         agreement of both parties prior to the date of this Agreement.

1.19     "Patents" means the patents listed in the Schedule to the Patent
         Assignment contained in Schedule 1.

1.20     "Products" means products incorporating Balsalazide, whether or not
         such products are covered by the Patents, or any other material whose
         manufacture, use or sale by an unlicensed Third Party would constitute
         an infringement of any Valid Claim.

1.21     "Proprietary Information" shall have the meaning given to it in Clause
         6.1.

1.22     "Retained European Territory" means all member states for the time
         being of the European Union excluding the Shire Territory.

1.23     "Retained Milestone Sums" shall be as defined in Clause 5.3.1

                                       4


1.24     "RetainedSums" means the sum of (pound)[*] retained by Glycyx from sums
         received from Shire under the terms of Clause 5.4.

1.25     "Shire" means Shire Pharmaceuticals Group plc, a company incorporated
         in England having its registered office at East Anton, Andover,
         Hampshire, SP10 5RG, England.

1.26     "Shire Agreement" means the agreement of even date herewith between
         Glycyx and Shire for the grant by Glycyx to Shire of certain rights in
         respect of the Products in the Shire Territory as such agreement may be
         amended or replaced by the parties thereto from time to time.

1.27     "Shire Territory" means Austria, Belgium, Denmark, Finland, France,
         Germany, Iceland, Republic of Ireland, Luxembourg, Norway, The
         Netherlands, Switzerland, Sweden and the United Kingdom.

1.28     "Technical Information" means all formulae, raw material and product
         specifications, designs and procedures, formulation data, processes and
         methods, pharmacology, toxicology and other preclinical tests results,
         clinical trials data and results, know-how, trade secrets, inventions
         and other scientific, medical, technical and marketing data and
         information, including all patent and other intellectual property
         rights thereto, which:

         (a)      are owned or controlled by, or licensed to, Biorex or its
                  Affiliates during the term of this Agreement, and

         (b)      that are reasonably necessary for the development,
                  manufacture, sale or use of Products.

                  Technical Information shall include information and methods
                  relating to the characterisation, synthesis, formulation,
                  stability, manufacture or assay of Balsalazide.

[*] CONFIDENTIAL TREATMENT REQUESTED; CERTAIN INFORMATION OMITTED AND FILED
SEPARATELY WITH THE SEC.

                                       5


1.29     "Third Party" means any entity other than Glycyx or Biorex and their
         respective Affiliates.

1.30     "Trade Marks" means the National Trade Marks and the Community Trade
         Marks.

1.31     "Transfer Date" means the date on which the MCA approves and registers
         a transfer from Astra to Shire of the product registration granted in
         the United Kingdom to Astra numbered 0017/0394.

1.32     "Transfer Fees" shall be as defined in Clause 5.2.2.

1.33     "Valid Claim" means a claim of any issued and unexpired Patent, which
         has not been held permanently revoked, unenforceable or invalid by a
         decision of a court or other governmental agency of competent
         jurisdiction, unappealable or unappealed within the time allowed for
         appeal, and which has not been admitted to be invalid or unenforceable
         through reissue or disclaimer or otherwise.

1.34     "Working Day" means any day which is not a Saturday, a Sunday or a bank
         or public holiday in England, and "Working Days" shall be construed
         accordingly.

2.       REPRESENTATIONS AND WARRANTIES


2.1      Authorisation

         Biorex represents and warrants that (i) it has the full right and
         authority to grant the licenses and execute the Assignments provided in
         this Agreement and to perform its obligations hereunder; (ii) to the
         best of Biorex's knowledge, Glycyx may exercise the licenses granted to
         it under this Agreement without conflict with or infringement of any
         rights or alleged rights of any person or entity; (iii) Biorex has not
         made, and will not make during the term of this Agreement, any
         commitment or incur any obligation in conflict with the licenses
         granted in this Agreement; and (iv) as of the date of this Agreement,
         Biorex and its Affiliates have no patents or patent applications

                                       6


         within the Shire Territory, other than the Patents, related to
         Balsalazide, or to prodrugs, analogs or isomers thereof, or
         improvements to any of the foregoing.

2.2      No Other Representations

         Except to the extent provided in this Clause 2, Biorex makes no
         representations, extends no warranties of any kind, either express or
         implied, with respect to the use, sale, or other disposition by Glycyx
         or its sublicensees or other transferees of Products incorporating or
         made by use of subject matter licensed under this Agreement. THE
         WARRANTIES EXPRESSLY SET FORTH IN THIS CLAUSE 2 BY EITHER PARTY ARE
         EXCLUSIVE AND NO OTHER WARRANTY, WRITTEN OR ORAL, INCLUDING WARRANTIES
         OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, IS EXPRESSED OR
         IMPLIED.

3.       GRANT AND ASSIGNMENT


3.1      Grant

         Biorex hereby grants to Glycyx for the duration set out in Clause 3.3
         (and subject to the Patents assigned to Shire), a fully paid,
         irrevocable, exclusive right and license (with the full and free right
         to sublicense) under the Technical Information and the Manufacturing
         Technology to develop, have developed, make, have made, use, sell and
         have sold Products within the Shire Territory.

3.2      Assignment

         On the Effective Date Biorex shall, by executing the Assignments,
         assign to Shire the Patents, the National Trade Marks and the Community
         Trade Marks subject to a licence back to use and sublicense the
         Community Trade Marks in the Retained European Territory.

3.3      Term

                                       7


         3.3.1    This Agreement shall commence on the Effective Date and shall
                  expire on which ever is the later of (i) the date on which the
                  last of the Patents ceases to be in force and (ii) the date on
                  which the last payment due to Biorex under this Agreement has
                  been made by Glycyx.

         3.3.2    For the avoidance of doubt, on expiry of this Agreement (and
                  subject to the Patents assigned to Shire), Glycyx shall have a
                  perpetual, irrevocable, non-exclusive, royalty-free license
                  (with the right to sublicense) under the Technical Information
                  and Manufacturing Technology to make, have made, use, sell and
                  have sold Products in the Shire Territory.

         3.3.3    Neither party shall be entitled to terminate this Agreement
                  and the rights granted hereunder in any circumstances
                  whatsoever. In the event of any breach of the terms of this
                  Agreement by either party the rights of the other party in
                  respect of such breach shall be limited to damages or the
                  equitable remedies of specific performance or injunctive
                  relief and neither party shall be entitled to rescind or
                  terminate this Agreement in any circumstances whatsoever.

3.4      Documentation

         Each Party undertakes to execute (and Glycyx undertakes to procure
         execution by Shire) of such further documents in connection with the
         assignment of the Patents, the assignment of the National Trade Marks
         and the assignment and licence back of the Community Trade Marks or
         otherwise in connection with the licenses granted herein as may
         reasonably be required from time to time by the other party and to
         satisfy any requirements of national patent and trade mark laws to
         procure the same.

3.5      Shire Agreement

         3.5.1    Glycyx undertakes to use all reasonable commercial efforts to
                  ensure that Shire complies with all of Shire's obligations
                  under or in connection with the Shire Agreement, including but
                  not limited to:-

                                       8


                  3.5.1.1  using all reasonable commercial endeavours to obtain
                           Approvals in each of France, Germany and the
                           Netherlands, as soon as reasonably practicable; and

                  3.5.1.2  making payment in full of all sums due to Glycyx
                           under the Shire Agreement.

         3.5.2    Glycyx shall within three Working Days of the Effective Date
                  provide to Biorex a true and complete copy of the Shire
                  Agreement as executed by the parties thereto and shall
                  promptly notify Biorex of any changes or additions made to the
                  Shire Agreement thereafter.

4.       SURVIVAL OF ORIGINAL AGREEMENT


4.1      The provisions of the Original Agreement shall be varied as follows:-.

         4.1.1    The definition of Territory at Article 1.23 of the Original
                  Agreement shall be amended and shall read as follows:

                  "Territory" means the entire world, but excluding the
                  following countries: United States (including its territories,
                  possessions and the Commonwealth of Puerto Rico), Japan,
                  Korea, Taiwan, Austria, Belgium, Denmark, Finland, France,
                  Germany, Iceland, Republic of Ireland, Luxembourg, Norway, The
                  Netherlands, Switzerland, Sweden and the United Kingdom.
                  Subject to the terms of the Canada - Mexico Agreement, Canada
                  and Mexico are included in this Agreement.

         4.1.2    The definition of Principal Markets at Article 1.14 of the
                  Original Agreement shall be amended and shall read as follows:

                  "Principal Markets" means South Africa, Australia, New
                  Zealand, Canada, Italy and Spain.

                                       9


         4.1.3    Exhibit A of the Original Agreement shall be amended to
                  exclude the Patents to read as follows:

                  Patent                             Patent Number
                  -----------------------------------
                  Italy                              1,138,450

         4.1.4    Exhibit C of the Original Agreement shall be amended to
                  exclude the National Trade Marks and the Community Trade
                  Marks.

         4.1.5    The definitions of Community Trade Marks, Retained European
                  Territory and Shire at Clauses 1.8, 1.22 and 1.25 respectively
                  of this Agreement shall be included as new Articles 1.28, 1.29
                  and 1.30 respectively of the Original Agreement. Articles
                  6.3.1 to 6.3.4 of the Original Agreement shall be amended to
                  read as follows:

                  "6.3.1   Subject to the provisions of this Agreement, Biorex
                           hereby grants to Glycyx the exclusive right and
                           licence to use the Trade Mark in connection with the
                           exploitation of the Products in the Territory and the
                           Community Trade Marks in connection with the
                           exploitation of the Products in the Retained European
                           Territory throughout the term of this Agreement."

                  "6.3.2   Glycyx shall have the right to grant Sublicensees the
                           right to use the Trade Mark in connection with the
                           exploitation of the Products in the Territory and the
                           Community Trade Marks in connection with the
                           exploitation of the Products in the Retained European
                           Territory throughout the term of this Agreement,
                           subject to the provisions of this Agreement."

                  "6.3.3   Subject to the laws of the country concerned, Glycyx
                           shall have an exclusive right to institute and pursue
                           actions to prevent misuse of (i) the Trade Mark
                           throughout the Territory and (ii) the Community Trade
                           Marks throughout the Retained European Territory."

                                       10


                  "6.3.4   Glycyx's rights under the Community Trade Marks shall
                           be subject to Shire (or Shire's assignees or
                           sublicencees) maintaining the Community Trade Marks"

4.2      For the avoidance of doubt, and subject to Clause 3.5, any liability of
         Glycyx under the Original Agreement to make any payment to Biorex in
         respect of any part of the Shire Territory is hereby expressly
         terminated and waived.

4.3      Subject to Glycyx's obligations set out in Clause 3.5, Biorex and
         Glycyx hereby further agree that all development and commercialisation
         obligations of Biorex and Glycyx arising under the Original Agreement
         are hereby deemed to have been fully satisfied insofar as such
         obligations relate to the Shire Territory.

4.4      The Original Agreement as amended pursuant to this Clause 4 shall
         continue in full force and effect.

5.       PAYMENTS TO BIOREX


5.1      Biorex Fees

         In consideration of the grant by Biorex to Glycyx of the rights and
         licenses under this Agreement and the execution of the Assignments
         Glycyx shall, in accordance with Clause 5.2 pay to Biorex certain sums
         in respect of Initial License Fees and Transfer Fees received by Glycyx
         and shall make further payment (if any) in respect of the Retained
         Milestone Sums under Clause 5.3 and the Retained Sums under Clause 5.4.
         Any such payment shall be made through the banking system into such
         bank account as Biorex shall designate in writing from time to time for
         the receipt of such payments. Payments made to Biorex shall be made in
         Pounds Sterling.

5.2      Payment of Biorex Initial Fees and Biorex Transfer Fees

         In accordance with the terms of the Shire Agreement:

                                       11


         5.2.1    Glycyx' Solicitors shall receive from Shire the sum of
                  (pound)7,828,000 (the "Initial License Fees") on the Effective
                  Date and Glycyx shall, having retained sums in accordance with
                  Clause 5.4 below, and subject to Clause 5.2.3, procure that
                  within one Working Day of receipt by Glycyx' Solicitors of the
                  Initial License Fees there shall be paid to Biorex the sum of
                  (pound)[*] (the "Biorex Initial Fees").

         5.2.2    Glycyx' Solicitors shall receive from Shire the sum of
                  (pound)[*] (the "Transfer Fees") within 5 Working Days
                  of the Transfer Date and Glycyx shall subject to Clause 5.2.3,
                  procure that within 3 Working Days of receipt by Glycyx'
                  Solicitors of the Transfer Fees there shall be paid to Biorex
                  the sum of (pound)[*] (the "Biorex Transfer Fees").

         5.2.3    Glycyx may, at its option, to the extent permitted by law
                  procure the payment of up to (pound)1,600,000 of the Biorex
                  Initial Fees and up to (pound)600,000 of the Biorex Transfer
                  Fees by the allotment of fully paid Ordinary Shares of
                  (pound)0.05p each in the capital of Shire Pharmaceuticals
                  Group plc (the "Consideration Shares") upon terms whereby:

                  5.2.3.1  the Consideration Shares shall be allotted to Biorex
                           within 15 days of the Effective Date in respect of
                           the Biorex Initial Fees and within 15 days of the
                           Transfer Date in respect of the Biorex Transfer Fees;
                           and

                  5.2.3.2  the number of Consideration Shares shall be
                           calculated by reference to the mid-market quotation
                           as derived from the London Stock Exchange daily
                           Official List of Ordinary Shares in Shire
                           Pharmaceuticals Group plc averaged over the period of
                           5 (five) trading days immediately preceding the
                           Effective Date in respect of the Biorex Initial Fees
                           and the Transfer Date in respect of the Biorex
                           Transfer Fees; and

[*] CONFIDENTIAL TREATMENT REQUESTED; CERTAIN INFORMATION OMITTED AND FILED
SEPARATELY WITH THE SEC.

                                       12


                  5.2.3.3  the Consideration Shares shall rank pari passu in all
                           respects with the other Ordinary Shares in issue in
                           the capital of Shire Pharmaceutical Group plc; and

                  5.2.3.4  the Consideration Shares shall on allotment be
                           admitted to the Official List of the London Stock
                           Exchange and may be traded freely upon allotment.

5.3      Milestone Sums

         5.3.1    In accordance with Clauses 12.1.3, 12.1.4, 12.1.5 and 12.1.6
                  of the Shire Agreement certain sums are payable by Shire to
                  Glycyx on the occurrence of certain events (the "Milestone
                  Sums"). [******] Biorex further acknowledges that Glycyx is
                  required to retain cash or cash equivalent balances of not
                  less than the maximum liability to effect reimbursement to
                  Shire remaining outstanding from time to time under Clause
                  12.2 of the Shire Agreement (the "Retained Milestone Sums")
                  during the period to whichever is the earlier of the date of
                  payment (if any) of any reimbursement due in respect of the
                  year to 31 December 2005 and 30 April 2006.

         5.3.2    Glycyx shall pay to Biorex [*]% of the balance (if any) of the
                  Milestone Sums remaining after any reimbursement to Shire in
                  accordance with the provisions of the Shire Agreement, within
                  three Working Days of the date upon which Glycyx is no longer
                  required under the Shire Agreement to retain the Retained
                  Milestone Sums.

[*] CONFIDENTIAL TREATMENT REQUESTED; CERTAIN INFORMATION OMITTED AND FILED
SEPARATELY WITH THE SEC.

                                       13


5.4      Retained Sums

         Biorex acknowledges that under the terms of the Shire Agreement, Glycyx
         has assumed an obligation to pay (up to a maximum of (pound)[*]) the
         cost of any clinical trial effected in order to obtain Approval of a
         Product in France, Germany and/or The Netherlands. Glycyx shall retain
         the sum of (pound)[*] from the Initial License Fees received by it from
         Shire ("the Retained Sums"). Under the terms of the Shire Agreement
         Glycyx is required to retain cash or cash equivalent balances of not
         less than the maximum liability to effect reimbursement remaining
         outstanding from time to time until the earlier of:

         5.4.1    the reimbursement by Glycyx to Shire of (pound)[*] ([*] pounds
                  Sterling) in total in connection with the conduct of such
                  clinical trial;

         5.4.2    the grant of the first Approval in all of Germany, France and
                  the Netherlands; and

         5.4.3    the notification by Shire to Glycyx that it does not intend
                  carrying out such clinical trial or otherwise that Glycyx is
                  released from any obligation to reimburse Shire in respect of
                  such clinical trial.

         Within three Working Days of the date on which Glycyx is no longer
         required under the Shire Agreement to retain the Retained Sums, Glycyx
         shall pay to Biorex [*]% of the balance of the Retained Sums (if any)
         remaining after payment of the cost of such clinical trial.


[*] CONFIDENTIAL TREATMENT REQUESTED; CERTAIN INFORMATION OMITTED AND FILED
SEPARATELY WITH THE SEC.

                                       14


5.5      Interest

         Glycyx shall keep any and all cash or cash equivalent balances required
         under the terms of the Shire Agreement to be maintained by Glycyx in
         relation to the Retained Milestone Sums and the Retained Sums in an
         account whereby such sums shall earn a commercial rate of interest. On
         payment to Biorex of any part of the Retained Milestone Sums or
         Retained Sums Glycyx shall in addition pay to Biorex [*]% of all
         interest earned on the Retained Milestone Sums and the Retained Sums.

5.6      Cost of Goods Payments

         5.6.1    In the Shire Agreement, Glycyx has undertaken to procure that
                  the cost of goods to Shire in respect of Balsalazide ordered
                  and delivered to Shire in the period from the Effective Date
                  to 31 December 2001 (up to a maximum quantity of [*] ([*])
                  tonnes)) shall be (pound)[*] per kg (the "Maximum Price") and
                  that in the event that Shire is required to pay in excess of
                  the Maximum Price to suppliers of Balsalazide, Glycyx shall
                  reimburse to Shire the aggregate total excess (the "Cost of
                  Goods Payment").

         5.6.2    In the event that under the Shire Agreement Glycyx is required
                  to make and makes any Cost of Goods Payment to Shire it shall
                  notify Biorex in writing and Biorex shall within 30 days of
                  receipt of any such notification pay to Glycyx [*]% of any
                  such Cost of Goods Payment.

         5.6.3    Glycyx shall in accordance with the terms of the Shire
                  Agreement endeavour to minimise any Cost of Goods Payment that
                  it is required to make to Shire.



[*] CONFIDENTIAL TREATMENT REQUESTED; CERTAIN INFORMATION OMITTED AND FILED
SEPARATELY WITH THE SEC.

                                       15


5.7      Late Payments

         Any payments that are not paid on or before the date such payments are
         due under this Agreement shall bear interest at the rate of two per
         cent above the base lending rate for the time being of Barclays Bank
         Plc, London calculated on the number of days such payment is
         delinquent. This Clause 5.7 shall in no way limit any other remedy
         available to either party.

5.8      Withholding Tax

         5.8.1    All sums due hereunder shall be paid without deduction or
                  withholding in respect of duties, taxes, taxation or charges
                  otherwise of a taxation nature unless the deduction or
                  withholding is required by law. In the event that such
                  deductions or withholdings are required by law, the payer
                  shall:-

                  5.8.1.1  ensure that the deduction or withholding does not
                           exceed the minimum amount legally required;

                  5.8.1.2  account to the relevant taxation or other authorities
                           within the period for payment permitted by the
                           applicable law the full amount of the deduction or
                           withholding; and

                  5.8.1.3  furnish to the payee within the period for payment
                           permitted by the relevant law either an official
                           receipt of the relevant taxation authorities involved
                           in respect of all amounts so deducted or withheld or
                           if such receipts are not issued by the taxation
                           authorities concerned a certificate of deduction or
                           equivalent evidence of the relevant deduction or
                           withholding.

         5.8.2    For the purpose of calculating the share of the Retained Sums
                  and the Milestone Sums due to Biorex under this Agreement,
                  Glycyx shall be deemed to have received payment in full from
                  Shire of the Milestone Sums and the Retained Sums under the
                  Shire Agreement without any deduction or

                                       16


                  withholding by Shire, in respect of duties, taxes or other
                  charges of a taxation nature.

         5.8.3    If Biorex is unable to claim credit or relief from double
                  taxation for any amounts withheld or deducted from any sums
                  due to Biorex under this Agreement, Glycyx shall on receipt of
                  notification by Biorex, pay to Biorex a payment equal to the
                  amount necessary to ensure that Biorex receives such sums as
                  it would have received in the absence of any such deduction or
                  withholding by Glycyx.

         5.8.4    Without prejudice to the provisions of Clause 5.8.1 above, the
                  parties shall co operate and use reasonable commercial efforts
                  to ensure that the amount of any deductions or withholdings
                  required by law are kept to a minimum

5.9      The parties will negotiate in good faith the apportionment of the
         consideration payable under this Agreement between the assignment of
         the Patents, the assignment of the National Trade Marks and the
         Community Trade Marks, and the variation to the licence of the
         Technical Information and Manufacturing Technology.

6.       CONFIDENTIALITY


6.1      General

         Except as expressly otherwise provided in this Agreement, each party
         shall hold in confidence and not use or disclose to any Third Party
         (other than employees, consultants, advisors, sublicensees and Third
         Parties with whom such party is considering entering into a business
         relationship who are similarly bound in writing) any product,
         technical, manufacturing, process, marketing, financial, business or
         other information, ideas, or know-how of the other party that is
         identified in writing by the other party as confidential or has, under
         the provisions of the Original Agreement, been so identified
         ("Proprietary Information") at the time of its disclosure or within
         thirty (30) days thereafter provided, however, that Proprietary
         Information of a party shall not include:

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         6.1.1    items which at the time of disclosure are published or
                  otherwise generally available to the public;

         6.1.2    items which, after disclosure to the other party, are
                  published or become generally available to the public through
                  no breach of this Agreement by the other party or the other
                  party's employees or agents; or

         6.1.3    items which the other can document were or are (i) legally in
                  its possession at the time of disclosure, free of any
                  obligation of confidentiality, and not acquired directly or
                  indirectly from such party; or (ii) independently developed.

6.2      Exceptions

         A party may disclose Proprietary Information of the other:

         6.2.1    In connection with, and in such manner as may be required by,
                  law or any relevant regulatory authority, or in compliance
                  with laws or regulations relating to registrations or sale of
                  securities or product approval;

         6.2.2    If such information is also rightfully acquired from a Third
                  Party who, to the best of such party's knowledge and belief,
                  is entitled to rightfully make such disclosure, but only to
                  the extent such party complies with any restrictions imposed
                  by the Third Party;

         6.2.3    To business advisers and any Third Party with whom such Party
                  proposes to enter into a business relationship and to its
                  advisers, investors or potential investors (collectively
                  "Third Party Recipients") Provided That any such disclosure
                  shall be limited only to such Proprietary Information as is
                  absolutely necessary and that the disclosing party shall
                  procure that any Third Party Recipient shall be bound by
                  obligations of confidentiality substantially equivalent to the
                  provisions of this Clause 6.

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         6.2.4    After five (5) years from the date such information (other
                  than Manufacturing Technology and Technical Information) is
                  disclosed to it.

6.3      Licensed Information

          Any Proprietary Information of or used by Biorex which is or may be
          subject to an exclusive licence to Glycyx hereunder, shall not be
          disclosed by Biorex to any Third Party for use in the Shire Territory.

6.4      Terms of this Agreement

         Glycyx and Biorex agree not to disclose the financial terms or
         conditions of this Agreement to any Third Party without the prior
         written consent of the other party hereto (which consent shall not be
         unreasonably withheld), except as required by applicable law, or to
         professional advisers, or to persons with whom Biorex or Glycyx has
         entered into or proposes to enter into a business relationship for the
         purposes of raising capital to run their business, and then only under
         conditions of confidentiality.

7.       INDEMNITY


7.1      Glycyx

         Subject to Biorex's compliance with its obligations set forth in Clause
         7.2 below, Glycyx agrees to indemnify and hold Biorex, its Affiliates
         and their employees and agents harmless from and against any losses,
         claims, damages, liabilities or actions (including reasonable
         attorneys' fees and court and other expenses of litigation)
         (collectively, the "Liabilities") suffered or incurred in connection
         with Third Party claims for personal injuries or any product recall to
         the extent caused by: (a) any failure to test for or provide adequate
         warnings of adverse side effects to the extent such failure arises out
         of acts or omissions in connection with preclinical or clinical testing
         carried out in respect of the Product by or on behalf of Shire in the
         Shire Territory; (b) any manufacturing defect in any Product or other
         material manufactured by Glycyx, its sublicensees, any subcontractor of
         Glycyx or its sublicensees or Shire or its sublicensees in the Shire
         Territory; or (c) any other act or omission (without regard to culpable
         conduct) of Glycyx, its sublicensees any subcontractor of Glycyx or its
         sublicensees or Shire

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         or its sublicensees in connection with the activities contemplated
         under this Agreement in the Shire Territory, except to the extent such
         Liabilities resulted from negligence, recklessness or intentional
         misconduct of Biorex.

7.2      Procedure

         In the event that Biorex intends to claim indemnification under this
         Clause 7 it shall promptly notify Glycyx in writing of any loss, claim,
         damage, liability or action in respect of which Biorex or any of its
         Affiliates, employees or agents intend to claim such indemnification,
         and Glycyx shall have the right to participate in, and, to the extent
         Glycyx so desires, jointly with any other indemnifying party similarly
         noticed, to assume the defence thereof with counsel mutually
         satisfactory to the parties; provided, however, that Biorex shall have
         the right to retain its own counsel, with the fees and expenses to be
         paid by Biorex, if representation of Biorex by the counsel retained by
         Glycyx would be inappropriate due to actual or potential differing
         interests between Biorex and any other party represented by such
         counsel in such proceedings. The indemnity agreement in this Clause 7
         shall not apply to amounts paid in settlement of any loss, claim,
         damage, liability or action if such settlement is effected without the
         consent of Glycyx, which consent shall not be withheld unreasonably.
         The failure to deliver written notice to Glycyx within a reasonable
         time after the commencement of any such action, if prejudicial to its
         ability to defend such action, shall relieve Glycyx of any liability to
         Biorex under this Clause 7, but the omission so to deliver written
         notice to Glycyx shall not relieve it of any liability that it may have
         to Biorex otherwise than under this Clause 7. Biorex, its employees and
         agents, shall cooperate fully with Glycyx and its legal representatives
         in the investigation of any action, claim or liability covered by this
         indemnification.

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8.       FORCE MAJEURE


         Neither party shall be held liable or responsible to the other party
         nor be deemed to have defaulted under or breached this Agreement for
         failure or delay in fulfilling or performing any term of this Agreement
         when such failure or delay is caused by or results from causes beyond
         the reasonable control of the affected party or from fire, floods,
         embargoes, war, acts of war (whether war be declared or not),
         insurrections, riots, civil commotions, strikes, lockouts or other
         labour disturbances, acts of God or acts, omissions or delays in acting
         by any governmental authority or the other party.

9.       ASSIGNMENT

9.1      This Agreement may not be assigned or otherwise transferred, nor,
         except as expressly provided hereunder, may any right or obligation
         hereunder be assigned or transferred, by either party without the
         written consent of the other party; provided, however that either
         Biorex or Glycyx may, without such consent, assign this Agreement and
         its rights and obligations hereunder in connection with the transfer or
         sale of all or substantially all of its business, if such assets
         include substantially all of the assets relating to its performance of
         its respective obligations hereunder, or in the event of its merger or
         consolidation with another company at any time during the term of this
         Agreement. Any purported assignment in violation of the preceding
         sentence shall be void. Any permitted assignee shall assume all
         obligations of its assignor under this Agreement. No assignment shall
         relieve either party of responsibility for the performance of any
         accrued obligation which such party then has hereunder.

9.2      If Shire assigns the Shire Agreement to any third party, any reference
         to Shire in this Agreement shall, where appropriate, be deemed to refer
         to the third party assignee.


10.      MISCELLANEOUS


10.1     Notices

         Any notice required or permitted to be given or made under this
         Agreement by one of

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         the parties hereto to the other shall be in writing, delivered
         personally or by facsimile (and promptly confirmed by personal delivery
         or courier) or courier, postage prepaid, addressed to such other party
         at its address indicated below, or to such other address as the
         addressee shall have last furnished in writing to the addressor and
         shall be effective upon receipt by the addressee.

         Glycyx Pharmaceuticals Ltd
         Milner House, 18 Parliament Street
         Hamilton HM12 Bermuda
         Attention: President

         Biorex Laboratories, Ltd
         2 Crossfield Chambers
         Gladbeck Way
         Enfield, Middlesex EN2 7HT
         Attention: Managing Director

10.2     Applicable Law

         This Agreement shall be governed by and construed in accordance with
         the laws of England, without regard to conflicts of laws provisions and
         the parties hereby submit to the exclusive jurisdiction of the English
         Courts.

10.3     No Consequential Damages

         EXCEPT AS PROVIDED IN CLAUSE 7, IN NO EVENT SHALL EITHER GLYCYX OR
         BIOREX OR THEIR AFFILIATES BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL
         OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS
         OF PROFITS, PRODUCTION, USE OR SALES) BASED ON CONTRACT, TORT OR ANY
         OTHER LEGAL THEORY.

10.4     Entire Agreement

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         This Agreement contains the entire understanding of the parties with
         respect to the subject matter hereof in respect of the Shire Territory.
         All express or implied agreements and understandings, either oral or
         written, heretofore made in relation to any part of the Shire Territory
         (including without limitation those set out in the Original Agreement
         to the extent they relate to any part of the Shire Territory,) are
         expressly excluded. This Agreement may be amended, or any term hereof
         modified, only by a written instrument duly executed by both parties
         hereto.

10.5     Headings

         The captions to the several Clauses and Sections hereof are not a part
         of this Agreement, but are merely guides or labels to assist in
         locating and reading the several Clauses and sections hereof.

10.6     Independent Contractors

         It is expressly agreed that Glycyx and Biorex shall be independent
         contractors and that the relationship between the two parties shall not
         constitute a partnership, joint venture or agency. Neither Glycyx nor
         Biorex shall have the authority to make any statements, representations
         or commitments of any kind, or to take any action, which shall be
         binding on the other, without the prior written authorisation of the
         other party to do so.

10.7     Waiver

         The waiver by either party of any right hereunder or of the failure to
         perform or of a breach by the other party shall not be deemed a waiver
         of any other right hereunder or of any other breach or failure by said
         other party whether of a similar nature or otherwise.

10.8     Further Assurances

         Glycyx shall use commercially reasonable efforts to ensure that each of
         its sublicensees and sub contractors shall observe and perform all the
         obligations and

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         restrictions applicable to it under this Agreement.

10.9     Severability

         In case any one or more of the provisions contained in this Agreement
         shall for any reason be held to be invalid, illegal or unenforceable in
         any respect, such invalidity, illegality or unenforceability shall not
         affect any other provisions hereof, but this Agreement shall be
         construed as if such invalid or illegal or unenforceable provisions had
         never been contained herein.


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AGREED by the parties through their duly authorised representatives on the date
written at the top of the first page of this Agreement:-




For and on behalf of                      For and on behalf of
Biorex  Laboratories Limited              Glycyx Pharmaceuticals, Ltd



Signed    ..........................      Signed    ..........................

Full Name ..........................      Full Name ..........................

Title     ..........................      Title     ..........................


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