Indole derivatives represented by the general formula:
31)
wherein R1 represents:
32)
R2 represents a phenyl group which may be substituted, and R3 represents a hydrogen atom or a methyl or ethyl group, either as single isomers or as isomer mixtures, as well as physiologically acceptable salts thereof, and their solvates. The indole derivatives of the invention exhibit more powerful and selective antagonism against intestinal 5-HT3 receptors than known 5-HT3 receptor antagonists and also have excellent duration of action, making them useful as prophylactic or therapeutic agents against digestive tract function disorders such as irritable bowel syndrome, diarrhea, and the like.
由通式代表的
吲哚衍
生物:
31)
其中 R1 代表
32)
R2 代表可被取代的苯基,R3 代表氢原子或甲基或乙基,可以是单一异构体,也可以是异构体混合物,以及它们的生理上可接受的盐和它们的溶解物。与已知的 5-HT3 受体拮抗剂相比,本发明的
吲哚衍
生物对肠道 5-HT3 受体具有更强的选择性拮抗作用,而且作用持续时间长,可用作肠易激综合征、腹泻等消化道功能紊乱的预防或治疗药物。