Synthesis and Pharmacology of 3,4-Dihydro-3-oxo-1,4-benzoxazine-8-carboxamide Derivatives, a New Class of Potent Serotonin-3 (5-HT3) Receptor Antagonists.
作者:Kakeshi KWAKITA、Takanobu KUROITA、Mitsuyoshi YASUMOTO、Mitsuharu SANO、Kenichi INABA、Takemi FUKUDA、Tetsuya TAHARA
DOI:10.1248/cpb.40.624
日期:——
4-dihydro-3-oxo-1,4-benzoxazine-8-carboxamide derivatives was synthesized and evaluated for serotonin-3 (5-HT3) receptor antagonistic activity assessed by their ability to antagonize the von Bezold-Jarish (BJ) effect in rats. Derivatives bearing 1-azabicyclo[2.2.2]oct-3-yl moiety as a basic function attached to the carboxamide at position 8 showed more potent antagonistic activity than those bearing the other
合成了一系列3,4-二氢-3-氧代-1,4-苯并恶嗪-8-羧酰胺衍生物,并通过其拮抗von Bezold-Jarish的能力评估了血清素3(5-HT3)受体的拮抗活性。 (BJ)在大鼠中的作用。带有1-氮杂双环[2.2.2]辛-3-基部分作为基本功能的衍生物在8位羧酰胺上显示出比带有其他三个基本部分的衍生物更强的拮抗活性。该系列的构效关系表明,甲基和氯基分别更有效地取代了位置4和6。该系列中的代表性化合物15(Y-25130)对BJ效应表现出强大的拮抗活性(ED50 = 1.3微克/千克iv),对5-HT3受体具有高亲和力(Ki = 2)。