Synthesis of 2-substituted-4-methyl-5,13-dihydropyrimido[4′,5′:5,6][1,4]thiazepino[2,3-<i>b</i>]quinoxaline as a new heterocyclic system
作者:Marzieh Akbarzadeh、Mehdi Bakavoli、Hossein Eshghi、Ali Shiri、Hamid Azizollahi、Joel T. Mague
DOI:10.1080/10426507.2018.1455199
日期:2018.9.2
GRAPHICAL ABSTRACT ABSTRACT 2-Substituted-4-methyl-5,13-dihydropyrimido[4′,5′:5,6][1,4]thiazepino[2,3-b]quinoxalines (7a-g), derivatives of a new heterocyclic system were synthesized through cyclocondensation of 2,4-dichloro-5-(chloromethyl)-6-methylpyrimidine (3) with 3-aminoquinoxaline-2-thiol (4) and subsequent substitution by various secondary amines. Regioselective heterocyclization was confirmed
图形摘要 摘要 2-Substituted-4-methyl-5,13-dihydropyrimido[4',5':5,6][1,4]thiazepino[2,3-b]quinoxalines (7a-g),a 的衍生物通过 2,4-二氯-5-(氯甲基)-6-甲基嘧啶 (3) 与 3-氨基喹喔啉-2-硫醇 (4) 的环缩合反应,并随后被各种仲胺取代,合成了新的杂环体系。4-methyl-2-(pyrrolidin-1-yl)-5,13-dihydropyrimido[4',5':5,6] [1,4]thiazepino[2, 3-b]喹喔啉 (7a)。