Diphenylmethyl [6R,7R]-7-[2-(2-chloroacetylamino-4-thiazolyl)-2-((Z)-methoxyimino)acetamido]-3-hydroxymethylceph-3-em-4-carboxylate 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
生成 Diphenylmethyl (6R,7R)-7-[2-(2-chloroacetylamino-4-thiazolyl)-2-([Z]-methoxyimino)acetamido]-3-(3,4-diacetoxycinnamoyloxy)methylceph-3-em-4-carboxylate