Preparation of penicillin and cephalosporin compounds and novel intermediates useful therein
申请人:Lilly Industries Limited
公开号:EP0096496A1
公开(公告)日:1983-12-21
There is described a process for preparing a sulphoxide of the formula
in which R1, R2, R3 and R4, taken individually, are alkyl, alkoxy or aryl groups, X is an alkylene group, R5 is a carboxylic acid protecting group and Y is a linking group through one or two carbon atoms forming a penam or cephem nucleus, which comprises reacting a compound of formula
with an oxidising agent. a-Sulphoxide compounds of formula (I) are also provided as novel intermediates.
本发明描述了一种制备式如下的亚砜的工艺
其中 R1、R2、R3 和 R4 分别为烷基、烷氧基或芳基,X 为亚烷基,R5 为羧酸保护基团,Y 为连接基团,通过一个或两个碳原子形成五甲基或七甲基核。
作为新型中间体,还提供了式 (I) 的 a-亚砜化合物。