Studies on fused indoles. I. Novel synthesis of 4-aminomethyltetrahydrothiopyrano(2,3-b)indoles through a thio-Claisen rearrangement.
作者:SUSUMU TAKADA、YASUO MAKISUMI
DOI:10.1248/cpb.32.872
日期:——
Two novel and simple methods for preparing 4-aminomethyl-2, 3, 4, 9-tetrahydrothiopyrano [2, 3-b] indoles are described. Both involve thio-Claisen rearrangements of indol-2-yl propargyl sulfides as a key step which affords thiopyrano [2, 3-b] indoles in good yields. Elaboration of these compounds led to fused tryptamine analogues which were found to have strong analgesic activity. The mechanism of this novel rearrangement is discussed.
本文介绍了制备 4-氨基甲基-2,3,4,9-四氢硫代吡喃 [2,3-b] 吲哚的两种新颖而简单的方法。这两种方法的关键步骤都是吲哚-2-基丙炔基硫化物的硫代-克莱森重排,从而以良好的收率得到硫代吡喃 [2, 3-b] 吲哚。通过对这些化合物的详细研究,发现了具有很强镇痛活性的融合色胺类似物。本文讨论了这种新型重排的机理。