发明授权
US5614549A High molecular weight polymer-based prodrugs 失效
高分子量聚合物基前药

High molecular weight polymer-based prodrugs
摘要:
Water-soluble prodrugs of the formula: ##STR1## wherein: D is a biologically active nucleophile;M is X or Q;x is an electron withdrawing group;Q is a moiety containing a free electron pair positioned five or six atoms from Y';Y and Y' are oxygen or sulfur;R is a polyalkylene oxide; andZ is OH, C.sub.1-4 alkyl moieties or ##STR2## are disclosed.
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