申请人:ELI LILLY AND COMPANY
公开号:EP0136788A1
公开(公告)日:1985-04-10
There is disclosed a process for preparing a penicillin or cephalosporin sulfone of the formula
wherein:
R' is hydrogen or a carboxylic acid acyl residue;
R2 is hydrogen or lower alkoxy;
R3 is hydrogen, a carboxy protecting group or a salt forming group;
A is
in which:
R4 is halo, lower alkyl, lower alkoxy, or -CH2R6, wherein R6 is lower alkanoyloxy or a heterocyclic group; and
R5 is hydrogen or alkoxycarbonyloxy; comprising reacting a compound of the formula
with an oxidizing agent and a catalytic amount of ruthenium tetroxide.
本发明公开了一种制备青霉素或头孢菌素砜的工艺,其式为
式中
R'是氢或羧酸酰基残基;
R2是氢或低级烷氧基
R3 是氢、羧基保护基团或成盐基团;
A 是
其中
R4 是卤素、低级烷基、低级烷氧基或 -CH2R6,其中 R6 是低级烷氧基或杂环基团;和
R5 是氢或烷氧羰氧基; 包括将式 2 的化合物与氧化剂和杂环基团反应
与氧化剂和催化量的四氧化钌反应。