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.
本发明涉及2-氮代取代的1-卡巴德硫杂戊烯-2-乙酸-3-羧酸I,其中通用的2-氮代基包括偶氮基,酰胺基,氨基,烷基氨基,二烷基氨基,三唑基,三唑啉基,环氧乙烷基,以及它们的药学上可接受的盐,酯,酸酐和酰胺衍生物,这些衍生物可用作抗生素。本发明还公开了从已知的适当取代的双环酮酯II通过2-偶氮中间体III制备I的方法:其中R.sup.16为H或CH.sub.3,优选为β-甲基;R.sup.6和R.sup.7分别为氢,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,磺酸基,氨基,保护氨基等取代,其中R.sup.6和R.sup.7一起也可以是C.sub.2-C.sub.4烷基亚甲基,同样取代;条件是R.sup.6和R.sup.7都不是未取代的烷基,R.sup.1和R.sup.2是氢,烷基,酰基等,可以结合形成含有3至7个原子的环;R.sup.a是氢,盐阳离子,可拆卸的保护基或药学上可接受的酯基团。本发明还公开了制备这种化合物的方法;包含这种化合物的药物组合物;以及在需要抗生素效果时,给予这种化合物和组合物的治疗方法。