Preparation of New Nitrogen-Bridged Heterocycles. 16. Facile Synthesis of Thieno[2,3-<i>b</i>]indolizine Derivatives
作者:Akikazu Kakehi、Suketaka Ito、Yasuhiro Ohno、Shouji Shiba、Sakashi Kamata
DOI:10.1246/bcsj.60.3713
日期:1987.10
2-Ethoxycarbonyl-3-methyl- and 3-phenylthieno[2,3-b]indolizine derivatives were first synthesized in moderate to good yields by the treatment of tricyclic 5,5a-dihydropyrido[2,1-c]thieno[3,2-e][1,4]thiazines with a dehydrogenating agent. In contrast to the cases of bicyclic 1,9a-dihydropyrido[2,1-c][1,4]thiazines, all of the thienoindolizines obtained here were rearranged products and no desulfurized
2-乙氧基羰基-3-甲基-和3-苯基噻吩并[2,3-b]吲哚嗪衍生物首先通过处理三环5,5a-二氢吡啶并[2,1-c]噻吩并[3, 2-e][1,4] 噻嗪与脱氢剂。与双环1,9a-二氢吡啶并[2,1-c][1,4]噻嗪的情况相比,这里得到的所有噻吩并吲哚茚都是重排产物,没有得到脱硫产物。