Synthesis and Antimicrobial Evaluation of New Pyrano[4,3-b]pyran and Pyrano[3,2-c]chromene Derivatives Bearing a 2-Thiophenoxyquinoline Nucleus
作者:Jigar A. Makawana、Manish P. Patel、Ranjan G. Patel
DOI:10.1002/ardp.201100203
日期:2012.4
A new series of pyrano[4,3‐b]pyran 4a–i and pyrano[3,2‐c]chromene 6a–r derivatives bearing a 2‐thiophenoxyquinoline nucleus were synthesized by reaction of 2‐(4‐(un)‐substituted thiophenoxy)quinoline‐3‐carbaldehydes 2a–i with 6‐methyl‐4‐hydroxypyran‐2‐one 3 and 4‐hydroxy‐6‐(un)‐substituted‐2H‐chromen‐2‐one 5a–b respectively and malononitrile at room temperature in the presence of KOH as a basic catalyst
通过 2-(4-(un)- 反应合成了一系列带有 2-噻吩氧基喹啉核的吡喃并[4,3-b]吡喃 4a-i 和吡并[3,2-c]色烯 6a-r 衍生物取代的噻吩氧基)喹啉-3-甲醛 2a-i 分别与 6-甲基-4-羟基吡喃-2-one 3 和 4-羟基-6-(un)-取代的-2H-色胺-2-one 5a-b 和丙二腈在室温下,在 KOH 作为碱性催化剂存在下。使用肉汤对三种革兰氏阳性菌(肺炎链球菌、枯草芽孢杆菌、破伤风梭菌)、三种革兰氏阴性菌(伤寒沙门氏菌、大肠杆菌、霍乱弧菌)和两种真菌(白色念珠菌、烟曲霉)进行了筛选微量稀释 MIC(最低抑菌浓度)法。经过抗菌素筛选,