A series of novel 2-benzylamino-3-substituted quinazolin-4(3H)-ones have been synthesized by treating 3-amino-2-benzylamino quinazolin-4(3H)-one, with different aldehydes and ketones. The starting material 3-amino-2-benzylamino quinazolin-4(3H)-one was synthesized by nucleophilic substitution of thiomethyl group of 3-amino-2-methylthio quinazolin-4(3H)-one by benzylamine. The title compounds were investigated for analgesic and anti-inflammatory activities. All the test compounds exhibited significant analgesic activity, whereas the compound III is equipotent with diclofenac sodium. The compounds I, II and III showed more potent anti-inflammatory activity than diclofenac sodium.
通过用不同的醛和酮处理3-
氨基-2-苄
氨基
喹唑啉-4(3H)-酮,合成了一系列新型2-苄
氨基-3-取代的
喹唑啉-4(3H)-酮。以3-
氨基-2-甲
硫基
喹唑啉-4(3H)-酮的
硫甲基被
苄胺亲核取代,合成了起始原料3-
氨基-2-苄
氨基
喹唑啉-4(3H)-酮。研究了标题化合物的镇痛和抗炎活性。所有测试化合物均表现出显着的镇痛活性,而化合物III与
双氯芬酸钠等效。化合物I、II和III显示出比
双氯芬酸钠更有效的抗炎活性。