(
R)-2-[(2
R)-2
r-benzothiazol-2-yldisulfanyl-4-oxo-3
c-(3-phenyl-propionylamino)-azetidin-1-yl]-3-methyl-but-3-enoic acid 2,2,2-trichloro-ethyl ester 以
二氯甲烷 为溶剂,
生成
(6R)-3ξ-methyl-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2c-carboxylic acid 2,2,2-trichloro-ethyl ester