Novel prodrugs of biologically active agents containing mercapto groups, process for preparing and therapeutically effective composition containing the same
申请人:Merck & Co., Inc.
公开号:EP0038541A1
公开(公告)日:1981-10-28
Novel, transient prodrug forms of biologically active agents containing mercapto groups have (i) the structural formula:
wherein X is O, S or NR5; R1S is the residue of any biologically active agent R'SH; R2 is alkyl; aryl; cycloalkyl; alkenyl; cycloalkenyl; alkynynl; aralkyl, alkyryl, aralkenyl, aralkynyl, alkenylaryl, alkynylaryl, loweracyloxyalkyl, and caraboxyal- kyl, heterocyclic, either directly bonded to the carbonyl function or linked thereto via an alkylene bridge, and subsituted derivatives of the above; R3 is hydrogen, R2, lower acyl, cyano, haloloweralkyl, carbamyl, -CH2ONO2 and -CH2OCOR2; R5 is hydrogen or lower alkyl; and further wherein R2 and R3 may be taken together to form a cyclizing moiety with the provizo that when R'S is the residue of a sulfur containing amino acid, the X cannot be NR5; (ii) the structural formula (I) wherein
is the residue of an amino acid, and (iii) the non-toxic, pharmaceutically acceptable salt thereof; process for preparing and therapeutically effective composition containing the same.
含有巯基的生物活性剂的新型瞬效原药形式具有 (i) 结构式:
其中 X 是 O、S 或 NR5;R1S 是任何生物活性剂的残基 R'SH;R2 是烷基;芳基;环烷基;烯基;环烯基;炔基;芳烷基、炔基、芳烯基、芳炔基、炔芳基、下酰氧基烷基和杂环基,可直接与羰基功能键结合或通过亚烷基桥与之连接,以及上述物质的亚取代衍生物;R3 是氢、R2、低级酰基、氰基、卤代低级烷基、氨甲酰基、-CH2ONO2 和 -CH2OCOR2;R5 是氢或低级烷基;此外,其中 R2 和 R3 可一起形成环化分子,但当 R'S 是含硫氨基酸的残基时,X 不能是 NR5; (ii) 结构式(I) 其中
是氨基酸的残基,和(iii)其无毒、药学上可接受的盐;制备方法和含有相同物质的治疗有效组合物。