(R)-2-[(2R,3R)-2-Acetylsulfanyl-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-4-oxo-azetidin-1-yl]-3-methyl-but-3-enoic acid methyl ester 在
三乙胺 作用下,
以
氯仿 为溶剂,
以65%的产率得到2-[(2R,3R)-2-Acetylsulfanyl-3-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-4-oxo-azetidin-1-yl]-3-methyl-but-2-enoic acid methyl ester