Design and synthesis of novel 2-(3-substituted propyl)-3-(2-methyl phenyl) quinazolin-4-(3<i>H</i>)-ones as a new class of H<sub>1</sub>-antihistaminic agents
作者:V. Alagarsamy、P. Parthiban
DOI:10.3109/14756366.2011.631184
日期:2013.2.1
A series of novel 2-(3-substituted propyl)-3-(2-methyl phenyl) quinazolin-4-(3H)-ones were synthesized by the reaction of 2-(3-bromopropyl thio)-3-(2-methyl phenyl) quinazolin-4-(3H)-one with various amines. The starting material, 2-(3-bromopropyl thio)-3-(2-methyl phenyl) quinazolin-4-(3H)-one was synthesized from 2-methyl aniline. When tested for their in vivo H(1)-antihistaminic activity on conscious
通过2-(3-溴丙基硫代)-3-(2-的反应合成了一系列新型的2-(3-取代的丙基)-3-(2-甲基苯基)喹唑啉-4-(3H)-。甲基苯基)喹唑啉-4-(3H)-1与各种胺。由2-甲基苯胺合成起始原料2-(3-溴丙基硫代)-3-(2-甲基苯基)喹唑啉-4-(3H)-。当测试其对有意识的豚鼠的体内H(1)-抗组胺活性时,所有测试化合物均能保护动物免受组胺诱导的支气管痉挛的明显侵害。化合物2-(3-(4-甲基哌嗪-1-基)丙硫基)-3-(2-甲基苯基)喹唑啉-4(3H)-一(OT5)成为该化合物中活性最高的化合物(保护度为71.70%)。与参比标准马来酸氯苯那敏相比(保护等级为70.09%)。与马来酸氯苯那敏(33%)相比,化合物OT5的镇静作用(7%)可忽略不计。