(R)-6-(1-benzhydryl-3-methylazetidin-3-ylamino)-4-methyl-2,10-dihydro-9-oxa-1,2,4a-triazaphenanthren-3-one 、
二碳酸二叔丁酯 在
氢氧化钯 氢气 、
甲醇 、 silica gel 、
乙酸乙酯 、 petroleum ether 作用下,
以
甲醇 为溶剂,
25.0~50.0 ℃
、45.96 MPa
条件下,
反应 3.0h,
以to give 3-methyl-3-((R)-4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-ylamino)-azetidine-1-carboxylic acid tert-butyl ester (20 g, 75%) as a white solid的产率得到3-methyl-3-((R)-4-methyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triazaphenanthren-6-ylamino)azetidine-1-carboxylic acid tert-butyl ester