申请人:Harvard University
公开号:US04673737A1
公开(公告)日:1987-06-16
7.beta.-Acylamino-3-trifluoromethylsulfonyloxy-1-carba-3-cephem-4-carboxyli c acid antibiotic compounds, esters and salts thereof, and the corresponding 7-amino and protected 7-amino 1-carbacephalosporins are provided. The 3-trifluoromethylsulfonyloxy-substituted 1-carbacephalosporins also are useful in a process for preparing 3-halo-1-carbacephalosporins which comprises reacting a 3-triflate ester with a lithium halide in an aprotic polar solvent.
提供了7.beta.-酰胺基-3-三氟甲磺酰氧基-1-卡巴-3-头孢-4-羧酸抗生素化合物、酯及其盐,以及相应的7-氨基和受保护的7-氨基1-卡巴头孢菌素。3-三氟甲磺酰氧基取代的1-卡巴头孢菌素也可用于制备3-卤代-1-卡巴头孢菌素的方法,包括在无极性极性溶剂中将3-三氟甲基酸酯与锂卤化物反应。