申请人:Merck & Co., Inc.
公开号:US04782051A1
公开(公告)日:1988-11-01
Disclosed are 2-aza-substituted 1-carbadethiapen-2-em-3-carboxylic acids I, where the generic 2-aza group includes azido, acylamino, amino, alkylamino, dialkylamino, trizolyl, triazolinyl, aziridinyl, and their pharmaceutically acceptable salt, ester, anhydride and amide derivatives which are useful as antibiotics. Also disclosed are processes for the preparation of I from the known, appropriately substituted bicyclic keto ester II via the 2-azido central intermediate III: ##STR1## wherein R.sup.16 is H or CH.sub.3, preferably beta-methyl; R.sup.6, and R.sup.7 are independently hydrogen, linear, branched or cyclic C.sub.1 -C.sub.5 alkyl, which can be substituted with fluoro, hydroxy, protected hydroxy, sulfoxy, amino, protected amino, wherein R.sup.6 and R.sup.7 taken together can also be C.sub.2 -C.sub.4 alkylidene, similarly substituted; with the proviso that both R.sup.6 and R.sup.7 are not unsubstituted alkyl, R.sup.1 and R.sup.2 are, inter alia, hydrogen, alkyl, acyl, and can be joined to form a ring comprising 3 to 7 atoms; R.sup.a is hydrogen, a salt cation, a removable protecting group, or a pharmaceutically acceptable ester moiety. Also disclosed are processes for the preparation of such compounds; pharmaceutical compositions comprising such compounds; and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
本文披露了2-氮代取代的1-卡巴德
硫杂
吡啶-2-烯-3-
羧酸I,其中通用的2-氮代基包括偶氮基、酰
氨基、
氨基、烷基
氨基、二烷基胺基、三唑基、三唑啉基、氮杂环丙基等,以及它们的药用可接受的盐、酯、酐和酰胺衍
生物,其可用作抗生素。还披露了从已知的适当取代的双环
酮酯II经2-偶氮中间体III制备I的方法:其中R.sup.16为H或CH.sub.3,优选β-甲基;R.sup.6和R.sup.7独立地为氢、线性、支链或环状C.sub.1-C.sub.5烷基,可以用
氟、羟基、保护羟基、亚砜基、
氨基、保护
氨基取代,其中R.sup.6和R.sup.7共同也可以是C.sub.2-C.sub.4烷基亚甲基,同样取代;但须注意R.sup.6和R.sup.7均不是未取代的烷基,R.sup.1和R.sup.2为氢、烷基、酰基等,可以连接形成包含3至7个原子的环;R.sup.a为氢、盐阳离子、可去除的保护基,或药用可接受的酯基。还披露了制备这类化合物的方法;包含这类化合物的药物组合物;以及在需要抗生素效果时,施用这类化合物和组合物的治疗方法。