Synthesis and properties of pyrimido[4,5-a]- and pyrido[4,3-a]carbazole derivatives
作者:S. Yu. Kukushkin、P. Yu. Ivanov、L. M. Alekseeva、K. I. Kobrakov、V. G. Granik
DOI:10.1007/s11172-005-0202-y
日期:2004.12
Methods for the synthesis of substituted pyrimido [4,5-a]- and pyrido[4,3-a]carbazoles were proposed. Condensation of 2-(dimethylaminomethylene)-6-methyl-2,3,4,9-tetrahydro-1H-carbazol-1-one with guanidine and thiourea afforded 2-amino-8-methyl-6,11-dihydro-5H-pyrimido[4,5-a]carbazole and 8-methyl-3,5,6,11-tetrahydro-2H-pyrimido[4,5-a]carbazole-2-thione, respectively. The reaction of cyano(6-methyl-2
提出了合成取代嘧啶[4,5-a]-和吡啶并[4,3-a]咔唑的方法。2-(二甲基氨基亚甲基)-6-甲基-2,3,4,9-四氢-1H-咔唑-1-one与胍和硫脲的缩合得到2-氨基-8-甲基-6,11-二氢-5H-嘧啶并[4,5-a]咔唑和8-甲基-3,5,6,11-四氢-2H-嘧啶并[4,5-a]咔唑-2-硫酮,分别。氰基(6-甲基-2,3,4,9-四氢-1H-咔唑-1-亚基)乙酰胺与二甲基甲酰胺二甲基乙缩醛反应得到N-(二甲氨基-亚甲基)氰基(6-甲基-2,3, 4,9-四氢-1H-咔唑-1-亚基)乙酰胺。后者环化产生1-氰基-8-甲基-3,5,6,11-四氢-2H-吡啶并[4,3-a]咔唑-2-酮。