Synthesis and histamine H2-antagonist activity of 4-quinazolinone derivatives.
作者:NOBUO OGAWA、TOSHIHIKO YOSHIDA、TAKAYUKI ARATANI、EIICHI KOSHINAKA、HIDEO KATO、YASUO ITO
DOI:10.1248/cpb.36.2955
日期:——
With the aim of developing new atiulcer agents, a series of 4-quinazolinone derivatives was synthesized and tested for histamine H2-antagonist activity and gastric antisecretory activity. Thus, 2-alkylamino- (8a-d, 10a-s), 2-alkylthio- (15), and 2-alkyl-4-quinazolinones (18a-k) were prepared by the condensation of alkylamines with 2-chloro- or 2-methlthio-4-quinazolinones, the condensation of alkyl bromides with 2-mercapto-4-quinazolinones, and the condensation of alkylcarboxylic acids with anthranilamides, respectively.Several of the 4-quinazolinone derivatives thus synthesized showed potent H2-antagonist activity, and one of them, 2-[3-[3-(1-piperidinylmehyl)phenoxy]propylamino]-4(3H)-quinazo-linone (8d) showed the most potent antisecretory activity. The structure-activity relationships are discussed.
为了开发新的抗溃疡药物,合成了一系列4-喹唑啉酮衍生物,并测试了其组胺H2拮抗剂活性和胃抗分泌活性。因此,合成了2-烷基氨基(8a-d,10a-s)、2-烷基硫基(15)以及2-烷基-4-喹唑啉酮(18a-k),其方法分别是将烷基胺与2-氯或2-甲硫基-4-喹唑啉酮缩合、将烷基溴化物与2-巯基-4-喹唑啉酮缩合,以及将烷基羧酸与氨基苯甲酸酰胺缩合。合成的几种4-喹唑啉酮衍生物显示出强效的H2拮抗剂活性,其中一种2-[3-[3-(1-哌啶基甲基)苯氧]丙氨基]-4(3H)-喹唑啉酮(8d)表现出最强的抗分泌活性。讨论了结构-活性关系。