(4S)-3,3-diethyl-1-[(R)-α-allyl-(4-methyl)benzylaminocarbonyl]-4-[(4-benzyloxycarbonyl)phenoxy]azetidin-2-one 在
palladium-carbon 作用下,
以
甲醇 为溶剂,
以27.8 gm (100%)的产率得到(4S)-3,3-diethyl-1-[(R)-α-n-propyl-(4-methyl)-benzylaminocarbonyl]-4-[(4-carboxy)phenoxy]azetidin-2-one