Syntheses of monocyclic and bicyclic 2,4(1H,3H)-pyrimidinediones and their serotonin 2 antagonist activities.
作者:Yoshifumi WATANABE、Hiroyuki USUI、Toshiro SHIBANO、Tsuyoshi TANAKA、Munefumi KANAO
DOI:10.1248/cpb.38.2726
日期:——
New serotonine 2(5-HT2) antagonists with a monocyclic or bicyclic 2, 4(1H, 3H)-pyrimidinedione have been prepared and their activities evaluated. In a series of monocyclic compounds, 1-substituted 5-phenyl-2, 4(1H, 3H)-pyrimidinedione 14 showed potent in vitro activity, and the corresponding 3-substituted 5-phenyl and 6-phenyl derivatives 3, 8 and 20a also showed moderate activity. In the bicyclic compounds, 3-substituted 5, 6, 7, 8-tetrahydro-2, 4(1H, 3H)-quinazolinedione 33 exhibited the most potent activity among the compounds prepared in this paper. The in vivo antagonist activity of 33 was comparable of that of ketanserin, a typical peripheral 5-HT2 antagonist.
新型血清素2(5-HT2)拮抗剂已通过单环或双环2, 4(1H, 3H)-嘧啶二酮的合成制备,并评估了其活性。在一系列单环化合物中,1-取代的5-苯基-2, 4(1H, 3H)-嘧啶二酮14显示出强的体外活性,而相应的3-取代的5-苯基和6-苯基衍生物3、8和20a也表现出中等活性。在双环化合物中,3-取代的5, 6, 7, 8-四氢-2, 4(1H, 3H)-喹唑啉二酮33在本文中制备的化合物中表现出最强的活性。化合物33的体内拮抗活性与酮哌齐(典型的周围5-HT2拮抗剂)相当。