L-脯氨酸 、
(2S,4aS,7R,8aR)-2-formyl-4,4,7-trimethyl-N-(2-methyl-3-phenylallyl)octahydro-1,3-benzoxazine 以
甲苯 为溶剂,
反应 0.5h,
以82%的产率得到(1S,2R,7S,8S,9R,13S,16R,18R)-9,12,12,16-tetramethyl-8-phenyl-19-oxa-3,11-diazapentacyclo[9.8.0.02,9.03,7.013,18]nonadecane