Chemistry: natural resins or derivatives; peptides or proteins; – Peptides of 3 to 100 amino acid residues – Chemical aftertreatment – e.g. – acylation – methylation – etc.
Patent
1999-09-09
2000-12-19
Low, Christopher S. F.
Chemistry: natural resins or derivatives; peptides or proteins;
Peptides of 3 to 100 amino acid residues
Chemical aftertreatment, e.g., acylation, methylation, etc.
530303, 530342, 530356, 530378, 530402, C07K 100, A61K 3578
Patent
active
061628956
ABSTRACT:
A method for modifying a protein or polypeptide is disclosed which includes the steps of dispersing a protein or polypeptide in an essentially non-aqueous medium and peracylating the protein or polypeptide with a cyclic anhydride having a carbon chain substituent selected from the group consisting of alkyl and alkenyl groups. Most preferably, the cyclic anhydride is succinic anhydride, although glutaric anhydride may also be employed. Preferably, the step of peracylating the protein or polypeptide is performed in the presence of an acid catalyst, most preferably .rho.-toluene sulfonic acid. The resultant modified protein or polypeptide may be employed in numerous applications including drug delivery, absorbable sutures, and thermoplastic films and molded articles.
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Allan Jacqueline M.
Corbett Joel T.
Shalaby Shalaby W.
Gregory Leigh P.
Low Christopher S. F.
Mohamed Abdel A.
Poly-Med, Inc.
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