Synthesis of benzo-γ-carboline alkaloid cryptosanginolentine by reaction of indole-2,3-dicarboxylic anhydrides with anilines
作者:Yasuyoshi Miki、Makoto Kuromatsu、Hideaki Miyatake、Hiromi Hamamoto
DOI:10.1016/j.tetlet.2007.10.130
日期:2007.12
1-Benzenesulfonylindole-2,3-dicarboxylic anhydride was reacted with aniline to give the 2-carbamoylindole-3-carboxylic acid as the sole product, but with N-methylaniline, the 3-carbamoylindole-2-carboxylic acid was the major product, which could be transformed into the 1-benzenesulfonylbenzo-γ-carbolinone in the presence of Pd(OCOCF3)2. The reduction of the benzo-γ-carbolinone with LiAlH4 gave the
使1-苯磺酰亚吲哚-2,3-二羧酸酐与苯胺反应,以生成2-氨基甲酰基吲哚-3-羧酸为唯一产物,但与N-甲基苯胺一起,以3-氨基甲酰基吲哚-2-羧酸为主要产物,在Pd(OCOCF 3)2存在下,可将其转化为1-苯磺酰基苯并-γ-咔啉酮。用LiAlH 4还原苯并-γ-咔啉酮可得到高产率的隐山茱lent素。