Studies on Condensed Triazines as Chemotherapeutic Agents, II. Synthesis of 1,2,4-Triazino[5,6-b]indoles and Related Compounds
作者:Vishnu Ji Ram
DOI:10.1002/ardp.19803130203
日期:——
1,2,4‐Triazino[5,6‐b]indoles and their derivatives are prepared by the cyclisation of isatin 3‐thiosemicarbazone (1) followed by condensation and displacement reactions. Condensations of 3‐hydrazino‐1,2,4‐triazino[5,6‐b]indole (4) with ethoxymethylenemalononitrile, ethyl ethoxymethylenecyanoacetate, acetylacetone and methyl bis(methylmercapto)methylenecyanoacetate yield the corresponding 3‐pyrazolo‐1
1,2,4 - 三嗪基 [5,6 - b] 吲哚及其衍生物是通过靛红 3 - 氨基硫脲 (1) 环化,然后进行缩合和置换反应制备的。3-肼基-1,2,4-三嗪基[5,6-b]吲哚(4)与乙氧基亚甲基丙二腈、乙氧基亚甲基乙氰基乙酸乙酯、乙酰丙酮和双(甲基巯基)亚甲基氰基乙酸甲酯缩合得到相应的3-1,2,4 -Triazino [5,6-b] 吲哚 6-9。在与甲酸、酸性或亚硝酸反应时,肼 4 进一步转化为高级杂环 10-12。