(1R,3R,4S)-menthyl (1R*,2S*,6S*)-5-(2-acetoxyethyl)-3-[(E)-2-(methoxycarbonyl)vinyl]-1,2,5,6-tetrahydro-2,6-methano[1,4]diazocino[1,2-a]indole-1-carboxylate 在
盐酸 、 sodium tetrahydroborate 作用下,
以
甲醇 为溶剂,
反应 3.0h,
以28%的产率得到(1R,3R,4S)-menthyl (1R*,2S*,6S*)-(3E)-ethylidene-5-(2-hydroxyethyl)-1,2,5,6-tetrahydro-2,6-methano[1,4]diazocino[1,2-a]indole-1-carboxylate