申请人:Sankyo Company Limited
公开号:EP0485204A2
公开(公告)日:1992-05-13
A compound of formula (I):
or a salt thereof, is prepared by reacting 7-amino-cephalosporanic acid or a salt thereof, with a solution comprising a compound of formula ROSO₃H in a compound of formula ROH, and in the presence of at least one compound of formula B(OR)₃ or compound of formula CH₂(OR)₂; in which, in each of said compounds of formulae (I), ROSO₃H, ROH, B(OR)₃ and CH₂(OR)₂, R represents an alkyl group having from 1 to 6 carbon atoms.
式 (I) 的化合物:
或其盐,是通过将 7-氨基头孢烷酸或其盐与包含式 ROSO₃H、式 ROH 和至少一种式 B(OR)₃ 或式 CH₂(OR)₂化合物的溶液反应制备的;其中,在式 (I)、ROSO₃H、ROH、B(OR)₃ 和 CH₂(OR)₂ 的每种所述化合物中,R 代表具有 1 至 6 个碳原子的烷基。