Patent ID: 7820759
Filing Date: 2010-10-26
Classification: A61K,A61P

Abstract:
1. A block copolymer represented by general formula (1) below wherein R1 represents a hydrogen atom or C 1-5 alkyl group; R2 represents a C 1-5 alkylene group; R3 represents a methylene or ethylene group; R4 represents a hydrogen atom or a C 1-4 acyl group; R5 represents a hydroxyl group, an optionally substituted aryl C 2-8 alkoxyl group, or an amino group having a residue of a derivative of an amino acid or a peptide; n is an integer of 5 to 1,000, m is an integer of 2 to 300, and x is an integer of 1 to 300; provided that the proportion of a hydroxyl group in the R5 is 0 to 99% and x is not larger than m.