BIODEGRADABLE COPOLYMERS LINKED TO SEGMENT WITH A PLURALITY OF FUNCTIONAL GROUPS

摘要

Biocompatible biodegradable polymer or copolymer is capped at one end and ha s free hydroxyl at the other end. The free hydroxyl can be reacted to link a plurality of functional groups some or each of which can be reacted to attac h directly or via a spacer molecule a moiety containing an aminoxyl-containing radical or to a moiety comprising other drug molecule residue or a moiety comprising other biologically active agent residue.