Synthesis of novel heterocyclic compounds from 6<i>H</i>-[2]-benzopyrano[4,3-c]quinolin-6-one and 2,3-diphenyl furo-[3,2-<i>c</i>]-quinolin-4-(5<i>H</i>)-one

Abstract

2567-257211-Chloro-6H-[2]-benzopyrano-[4,3-c]quinolin-6-ones 1a-g/4-chloro-2,3-diphenyl-furo[3 ,2-c] quinoline 6a-g are obtained via the interaction of 6H-[2]-benzopyran [4,3-c]-quinoline-6, 11-[12]-dione / 2,3-diphenyl-furo[3,2-c]-quinolin-4-(5H)-one with a mixture of phosphorus pentachloride and phosphorusoxychloride. These chloro derivatives are further treated with sodium azide, o-phenylenediamine, anthranilic acid and benzoic acidhydrazide separately to afford novel hetrocyclic compounds 11-methyl-1,2,4-tetrazolo [1', 5', 1,2] quinolino [4,3-c]-benzopyran-8-ones 2a-g / 8-methyl-4,5-diphenyl-1,2,4-tetrazolo-[1 ',5': 1,2]-furo[3,2-c]-quinoline 7a-g, 13-methyl-imidazolo - [3',2':1,2]-quinolino-[4,3-c]benzopyran-10-ones 3a-g / 10-methyl-6, 7 -diphenyl-imidazolo [3',2':1,2]-furo[3,2-c]-quinoline 8a-g, 13- methylquinazilono-[3', 2',1,2] quinolino [4,3-c]-benzopyran-10, 16-diones 4a-g /10-methyl-6,7 -diphenyl-quinazilono [3', 2', 1,2]furo[3,2-c]quinolin-13-one 9a-g, 11-methyl-1-phenyl-triazolo- [3',4':1,2]quinolino [4,3-c]- benzopyran-8-ones 5a-g /8-methyl-1-phenyl-4,5-diphenyl-triazolo [3',4':1,2]furo-[3,,2-c]-quinoline 10a-g respectively. Some of these compounds have also been screened for their biological activity