The Synthesis of New Heteropolycyclic Quinolone by Twofold Photocyclization: Methoxycarbonylnaphtho[2”,1”: 2’,3’-b]thieno[4’,5’: 2,3]thieno[5,4-c]quinolin-6(5H)-one

Abstract

New heterocyclic ring system namely 12-methoxy-carbonylnaphto[2,1:2',3-b]thieno[4',5'-2,3]thieno[5,4-c]quinolin-6(5H)-one (11) is prepared by multistep synthesis introducing twofold photochemical cyclization