Synthesis of novel trifluoromethyl-substituted spiro-[chromeno[4,3- d ]pyrimidine-5,1′-cycloalkanes], and evaluation of their analgesic effects in a mouse pain model
作者:Helio G. Bonacorso、Wilian C. Rosa、Sara M. Oliveira、Indiara Brusco、Evelyne S. Brum、Melissa B. Rodrigues、Clarissa P. Frizzo、Nilo Zanatta
DOI:10.1016/j.bmcl.2017.02.036
日期:2017.4
synthesized from the cyclocondensation reactions of three 2,2,2-trifluoro-1-(4-methoxyspiro[chromene-2,1'-cycloalkane]-3-yl)ethanones (3) containing 5-, 6- and 7-membered spirocycloalkanes, with some well-known amidine salts (4-6) [NH2CR(NH)]-in which R=Me, Ph, and NH2-at yields of 60-95%. Subsequently, three new 2-(pyrrol-1-yl)-4-(trifluoromethyl)-chromeno[4,3-d]pyrimidines (10) were obtained through a Clauson-Kaas
在本文中,我们报告了十二种2,5-取代的4-(三氟甲基)-spirchromechrome [4,3-d]嘧啶(7-10)的合成,以及它们在小鼠疼痛模型中的镇痛作用评估。从三个2,2,2-三氟-1-(4-甲氧基螺[chromene-2,1'-cycloalkane]-的环缩合反应合成了九个新的chromeno [4,3-d]嘧啶(7-9)含5元,6元和7元螺环烷烃的3-基)乙酮(3),以及一些众所周知的am盐(4-6)[NH2CR(NH)]-,其中R = Me,Ph和NH2-收率为60-95%。随后,通过各自的2-(氨基)-4之间的Clauson-Kaas反应,获得了三个新的2-(吡咯-1-基)-4-(三氟甲基)-铬[4,3-d]嘧啶(10)。 -(三氟甲基)-铬[4,3-d]嘧啶(9)和2,5-二甲氧基-四氢呋喃。镇痛作用评估表明,这些4-(三氟甲基)色酚[4,3-d]嘧啶(100mg /