New synthetic pathways have been elaborated to 1-methyl-1H-pyridazino[3,4-b]indoles starting from halopyridazin-3(2H)-ones. Suzuki cross-coupling reaction of chloro, iodo, dichloro, and dibromo substituted pyridazin-3(2H)-ones with 2-pivaloylaminophenylboronic acid followed by hydrolysis of the amide and subsequent ring closure via condensation gave fused indoles. Some of these compounds showed biological
从halopyridazin-3(2 H)-ones开始,新的合成途径已被阐明为1-methyl-1 H -pyridazino [3,4- b ]吲哚。氯,碘,二氯和二溴取代的哒嗪-3(2 H)-与2-新戊酰基氨基苯基硼酸的Suzuki交叉偶联反应,然后水解酰胺,随后通过缩合闭环,得到稠合的吲哚。这些化合物中的一些显示出作为抗胰锥虫剂的生物活性。
Gueven, Alaeattin; Jones, R. Alan, Journal of Chemical Research, Miniprint, 1993, # 9, p. 2411 - 2428