A novel synthesis of dibenzo[c,f]chromenes, dibenzo[c,h]chromenes and benzo[7,8]chromeno[3,4-f]isoindoles as antimicrobial agents
作者:Mohamed S.A El-Gaby、Medhat A Zahran、Magda M.F Ismail、Yousry A Ammar
DOI:10.1016/s0014-827x(00)00008-2
日期:2000.3
4-amino-5-oxo-2-aryl-5H-dibenzo[c,f]chromene-3-carbonitriles (4a,b); with ethyl 3,4-dichlorobenzylidene cyanoacetate to furnish dibenzo[c,f]chromene (5) and with elemental sulfur in dioxane containing piperidine to give thieno[3,4-d]naphtho[2,1-b]pyranone (6). Similarly, naphtho[1,2-b]pyranone (7) was reacted with arylmethylenemalononitriles and elemental sulfur to furnish dibenzo[c,h]chromenes (8) and thieno[3
使萘并[2,1-b]吡喃酮(3)与芳基亚甲基丙二腈反应,生成4-氨基-5-氧代-2-芳基-5H-二苯并[c,f]亚甲基-3-腈(4a,b) ; 用3,4-二氯亚苄基氰基乙酸乙酯制得二苯并[c,f]色烯(5),在含哌啶的二恶烷中与元素硫一起制得噻吩[3,4-d]萘并[2,1-b]吡喃酮(6) 。类似地,使萘并[1,2-b]吡喃酮(7)与芳基亚甲基丙二腈和元素硫反应,得到二苯并[c,h]苯并二甲基苯并(8)和噻吩并[3,4-d]萘并[1,2-b]。吡喃酮(10)。化合物10与N-芳基马来酰亚胺进行环加成反应,得到苯并[7,8]色酚[3,4-f]异吲哚(11a-c)。在体外筛选了其中一些化合物的抗菌活性。