BENZOQUINOLINES II. SYNTHESIS OF SOME NEW BENZO[h] PYRIMIDO [4′,5′:4,5]THIENO[2,3-b]QUINOLINE DERIVATIVES AND RELATED FUSED HEXACYCLIC SYSTEMS
作者:Etify Abdel-Ghafar Bakhite
DOI:10.1080/10426500008043660
日期:2000.4.1
hydrate, 10-amino-7-(2-furyl)-11-imino-5,6,10,11-tetrahydrobenzo[h]pyrimido[4′,5′:4,5]thieno [2,3-b]quinoline (8) was obtained. Compounds 8,20 and 25 were used as key intermediates in the synthesis of the fused hexacyclic compounds 9–19, 21–24 and 26–28 respectively. 8-Amino-7-(2-furyl)-5,6-dihydrobenzo[h]thieno[2,3-b]quinoline-9-carboxamide (3b) was reacted with some reagents, namely triethyl orthoformate
摘要 8-氨基-7-(2呋喃基)-5,6-二氢苯并[h]噻吩并[2,3-b]喹啉-9-甲腈(3a)与异硫氰酸苯酯、原甲酸三乙酯、乙二胺和/或钠的反应叠氮化物分别得到苯并[h]噻吩并[2,3-b]喹啉4、7、20和25。硫脲衍生物4的环化得到硫代嘧啶衍生物5。二硫代嘧啶6是通过3a与二硫化碳的反应制备的。用水合肼处理 7, 10-amino-7-(2-furyl)-11-imino-5,6,10,11-tetrahydrobenzo[h]pyrimido[4',5':4,5]thieno [获得2,3-b]喹啉(8)。化合物 8,20 和 25 分别用作合成稠合六环化合物 9-19、21-24 和 26-28 的关键中间体。8-Amino-7-(2-furyl)-5,6-dihydrobenzo[h]thieno[2,3-b]quinoline-9-carboxamide (3b) 与一些试