7,8a-dimethyl-3,5a,6-triphenyl-(5at,8at)-1,5,5a,8a-tetrahydro-1r,5c-etheno-cyclopenta[e][1,3]oxazepin-8-one 以
甲醇 为溶剂,
生成 6,8-dimethyl-2,5b,8a-triphenyl-4,5,5a,5b,6,8,8a,8b-octahydro-4,8;5,6-dicyclo-cyclopenta[3,4]cyclobuta[1,2-
d][1,3]oxazepin-7-one