Tetrahydrocyclopenta[<i>e</i>]pyrido[3,2-<i>b</i>][1,4]diazepine and -cyclopenta[<i>e</i>]pyrido[2,3-<i>b</i>][1,4]diazepine derivatives
作者:Francesco Savelli、Alessandro Boido、Iana Vazzana、Fabio Sparatore
DOI:10.1002/jhet.5570240641
日期:1987.11
study on compounds obtained by condensation of N-monoalkylated aromatic and hetero-aromatic diamines with α- and β-ketoesters, 7,8,9,10-tetrahydrocyclopenta[e]pyrido[3,2-b][1,4]diazepin-6(5H)-ones 4a, 4b and 5,7,8,10-tetrahydrocyclopenta[e]pyrido[2,3,-b][l,4]diazepin-9H)-ones 5a, 5b were prepared starting from 2,3-diaminopyridine or 2,3-diamino-5-chloropyridine and ethyl 2-oxo-cyclopentanecarboxylate
在研究将N-单烷基化的芳族和杂芳族二胺与α-和β-酮酸酯缩合制得的化合物时,有7,8,9,10-四氢环戊[ e ]吡啶基[3,2- b ] [1, 4] diazepin-6(5 H)-ones 4a,4b and 5,7,8,10-tetrahydrocyclopenta [ e ] pyrido [2,3,-b ] [l,4] diazepin-9 H)-ones 5a,从2,3-二氨基吡啶或2,3-二氨基-5-氯吡啶和2-氧代-环戊烷甲酸乙酯开始制备5b。化合物4a,b和5a,b遭受热诱导的对咪唑酮衍生物8a,b和5a的环收缩。图7a,b分别不适用于制备二氮杂pin酮衍生物。因此,制备了在加热下稳定的甲基化二氮杂庚酮15、17和18。通过二氮杂the硫酮20及其S-甲基衍生物21将化合物17转化为氯氮平类似物22。