6-Methylnicotinoyl chloride hydrochloride 、 silver salt of 2-[(3S,4R)-3-[(1'R)-1-allyloxycarbonyloxyethyl]-4-mercapto-2-oxo-azetidin-1-yl]-2-triphenylphosphoranylideneacetic acid allyl ester 生成
2-[(3S,4R)-3-[(1R)-1-allyloxycarbonyloxyethyl]-4-(6-methylnicotinoylthio)-2-oxo-azetidin-1-yl]-2-triphenylphosphoranylideneacetic acid allyl ester