申请人:Bristol-Meyers Company
公开号:US04699979A1
公开(公告)日:1987-10-13
This invention provides novel cephalosporin intermediates, 7.beta.-amino-3-[(Z)-1-propen-1-y1]-3-cephem-4-carboxylic acid and esters thereof having the general formula ##STR1## wherein the configuration of the 3-propenyl group is Z sometimes referred to as cis- and R is hydrogen or a conventional carboxy-protected group, or a physiologically hydrolyzable esterifying group, and acid addition salts thereof and the metal salts of the foregoing substance wherein R is hydrogen. These compounds are useful as intermediates for preparation of orally active cephalosporins.
这项发明提供了新颖的头孢菌素中间体,7-β-氨基-3-[(Z)-1-丙烯-1-基]-3-头孢-4-羧酸及其酯,其具有一般式##STR1##其中3-丙烯基基团的构型为Z,有时被称为顺式,R为氢或常规羧基保护基,或生理水解酯化基,以及其酸盐和前述物质的金属盐,其中R为氢。这些化合物可用作制备口服活性头孢菌素的中间体。