2-[2-benzothiazol-2-yldisulfanyl-4-oxo-3-(2-phenoxy-acetylamino)-azetidin-1-yl]-3-methyl-but-3-enoic acid benzhydryl ester 在
silver fluoride 、
间氯过氧苯甲酸 作用下,
生成 3-Methyl-5,8-dioxo-7-(2-phenoxy-acetylamino)-5λ
4-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 、
(2R,3R,7S)-3-Fluoro-3-methyl-5,8-dioxo-7-(2-phenoxy-acetylamino)-5λ4-thia-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid benzhydryl ester