(6R,7S)-7-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3-methyl-8-oxo-4,5-dithia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
生成
(6R,7S)-7-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-3-methyl-8-oxo-4,5-dithia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid