2-[(2R,3S)-2-(3-Bromo-2-oxo-propoxy)-4-oxo-3-phenylacetylamino-azetidin-1-yl]-3-methyl-but-2-enoic acid benzhydryl ester 、
1-甲基-5-巯基-1H-四氮唑 生成 benzhydryl 3-methyl-2-[(2R,3S)-2-[3-(1-methyltetrazol-5-yl)sulfanyl-2-oxopropoxy]-4-oxo-3-[(2-phenylacetyl)amino]azetidin-1-yl]but-2-enoate