5-[[6-[3-[4-[(3R,4S)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-2-oxo-4-[4-[(2S,3R,4S,5S,6S)-3,4,5-trihydroxy-6-methoxycarbonyloxan-2-yl]oxyphenyl]azetidin-1-yl]phenyl]prop-2-ynylamino]-6-oxohexyl]carbamoyl]-2-(3-hydroxy-6-oxoxanthen-9-yl)benzoic acid 在
甲醇 、
三乙胺 作用下,
反应 1.0h,
以100%的产率得到(2S,3S,4S,5R,6S)-6-[4-[(2S,3R)-1-[4-[3-[6-[[3-carboxy-4-(3-hydroxy-6-oxoxanthen-9-yl)benzoyl]amino]hexanoylamino]prop-1-ynyl]phenyl]-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxoazetidin-2-yl]phenoxy]-3,4,5-trihydroxyoxane-2-carboxylic acid