Synthesis and antinociceptive activity of new 2-substituted 4-(trifluoromethyl)-5,6-dihydrobenzo[ h ]quinazolines
作者:Helio G. Bonacorso、Wilian C. Rosa、Sara M. Oliveira、Indiara Brusco、Camila C. Dalla Pozza、Pablo A. Nogara、Carson W. Wiethan、Melissa B. Rodrigues、Clarissa P. Frizzo、Nilo Zanatta
DOI:10.1016/j.bmcl.2016.08.021
日期:2016.10
A useful synthetic route for an initial new series of 2-substituted 4-(trifluoromethyl)-5,6-dihydrobenzo[h]quinazolines (3), as well as an evaluation of their analgesic effect in a mice pain model, is reported. Five new quinazolines were formed from the cyclocondensation reactions of 2,2,2-trifluoro-1-(1-methoxy-1,2,3,4-tetrahydronaphthalen-2-yl)ethanone (1) with some well-known amidine salts [NH2CR(=NH)]
报道了一系列新的2-取代的4-(三氟甲基)-5,6-二氢苯并[h]喹唑啉类化合物的初始合成的有用途径(3),以及在小鼠疼痛模型中评估其镇痛作用的方法。由2,2,2-三氟-1-(1-甲氧基-1,2,3,4-四氢萘-2-基)乙酮(1)与一些众所周知的am盐的环缩合反应形成五个新的喹唑啉[NH 2 CR(= NH)](2),其中R = H,Me,Ph,NH 2和SMe,产率为40-70%。随后,由于吡咯核的重要性,在各自的2-(氨基)喹唑啉与2,5的反应中,通过Clauson-Kaas反应从各自的2-(氨基)喹唑啉获得了2-(吡咯-1-基)喹唑啉(4)。 -二甲氧基-四氢呋喃。镇痛效果评估表明,有4,5,6-二氢苯并[h]喹唑啉(3c(R = Ph),3d(R = NH2),3e(R = SMe)和4(R = pyrrol-1-yl)的化合物; 100mg / kg,po)和酮洛芬(100mg /