5-Iodomethyl-tetrahydro-furan-2-ol 、
methyl 1,2,3,4,5,6-hexahydroazepino<4,5-b>indole-5-carboxylate 在
对甲苯磺酸 、
三乙胺 作用下,
生成 (2S,3aS,10bS,12bR)-2-Hydroxy-2,3,3a,4,6,11,12,12b-octahydro-1H-6,12a-diaza-indeno[7,1-cd]fluorene-5-carboxylic acid methyl ester 、 (2R,3aS,10bS,12bR)-2-Hydroxy-2,3,3a,4,6,11,12,12b-octahydro-1H-6,12a-diaza-indeno[7,1-cd]fluorene-5-carboxylic acid methyl ester