This invention relates to a thiopyrano[2,3-b] indole derivative represented by general formula (I) (wherein R¹ and R² are the same or different from each other and each represents a hydrogen atom or a lower alkyl group and two broken lines represent each a single bond or one of them represents a double bond), and pharmacologically acceptable salts thereof. These compounds have an excellent 5-HT₃ antagonism.
本发明涉及通式(I)代表的
硫代
吡喃并[2,3-b]
吲哚衍
生物(其中R¹和R²彼此相同或不同,各代表一个氢原子或一个低级烷基,两条断线各代表一个单键或其中一个代表双键)及其药理学上可接受的盐类。这些化合物具有出色的 5-HT₃ 拮抗作用。