Novel 5-Hydroxytryptamine (5-HT3) Receptor Antagonists. Synthesis and Structure-Activity Relationships of 9-Methyl-2,3,4,9-tetrahydrothiopyrano(2,3-b)indol-4-one Derivatives.
作者:Takeshi SUZUKI、Akira MATSUHISA、Keiji MIYATA、Isao YANAGISAWA、Mitsuaki OHTA
DOI:10.1248/cpb.45.101
日期:——
Novel 9-methyl-4,9-dihydrothiopyrano[2,3-b]indol-4-one derivatives 2b-e, 3-methylene-9-methyl-2,3,4,9-tetrahydrothiopyrano[2,3-b]indol-4-on e derivatives 3b-e and 9-methyl-2,3,4,9-tetrahydrothiopyrano[2,3-b]indol-4-one derivatives 4a-e were prepared. The 5-hydroxytryptamine (5-HT3) receptor-antagonistic activities of these compounds were evaluated by using the von Bezold-Jarisch reflex test (B. J.
新型9-甲基-4,9-二氢噻喃并[2,3-b]吲哚-4-one衍生物2b-e,3-亚甲基-9-甲基-2,3,4,9-四氢噻喃并[2,3-b制备了]吲哚-4-on e衍生物3b-e和9-甲基-2,3,4,9-四氢噻喃并[2,3-b]吲哚-4-one衍生物4a-e。使用von Bezold-Jarisch反射试验(BJ反射,大鼠)和离体远端结肠(豚鼠)对5-HT的收缩反应,评估了这些化合物的5-羟色胺(5-HT3)受体拮抗活性。 。在BJ反射测试中(ID50 = 0.048微克/千克,iv),发现5-乙基-4-咪唑基衍生物4d的效力是昂丹西酮1的79倍,发现5-甲基-4-咪唑基衍生物4c在结肠收缩(IC50 = 0.0062 microM)分析中,其效力是1的126倍。