Compounds are disclosed of general formula (I): ##STR1## wherein R.sub.1, R.sub.3, R.sub.4, R.sub.6 and R.sub.7, which may be the same or different, each represents a hydrogen atom or an alkyl group; R.sub.2 represents a hydrogen atom or an alkyl, aryl, aralkyl, cycloalkyl or alkenyl group; or R.sub.1 and R.sub.2, together with the nitrogen atom to which they are attached, form a saturated monocyclic 5 to 7-membered ring which may optionally contain a further hetero function; R.sub.5 represents a hydrogen atom or an alkyl or alkenyl group; or R.sub.4 and R.sub.5 together form an aralkylidene group; Alk represents an alkylene chain containing two or three carbon atoms which may be unsubstituted or substituted by not more than two C.sub.1-3 alkyl groups; and X represents an oxygen or sulphur atom; and physiologically acceptable salts, solvates and bioprecursors thereof. The compounds are described as potentially useful for the treatment of migraine and may be formulated as pharmaceutical compositions in conventional manner using one or more pharmaceutically acceptable carriers or excipients. Various processes for the preparation of the compounds are disclosed including, for example, a process involving reacting an indole having an appropriate nitrile group at the 5-position, with a suitable oxygen- or sulphur-containing compound in order to introduce the required amide or thioamide group at the 5-position on the indole nucleus.
本发明涉及一般式(I)的化合物:其中R.sub.1、R.sub.3、R.sub.4、R.sub.6和R.sub.7,可以相同也可以不同,分别代表
氢原子或烷基基团;R.sub.2代表
氢原子或烷基、芳基、芳基烷基、
环烷基或
烯基基团;或者R.sub.1和R.sub.2与它们连接的
氮原子一起形成一个饱和的单环5到7成员环,该环可能还含有另外的杂原子功能基团;R.sub.5代表
氢原子或烷基或
烯基基团;或者R.sub.4和R.sub.5一起形成芳基烷基亚
甲基基团;Alk代表一个含有两个或三个
碳原子的烷基链,该链可以未被取代或被不超过两个C.sub.1-3烷基基团取代;X代表
氧原子或
硫原子;以及其生理上可接受的盐、溶剂化合物和
生物前体。所述化合物被描述为治疗偏头痛的潜在有用化合物,并且可以以传统方式制备为含有一种或多种医药上可接受的载体或赋形剂的药物组合物。公开了制备这些化合物的各种方法,例如,涉及将具有适当的5-位置上的腈基团的
吲哚与适当的含
氧或
硫化合物反应以在
吲哚核上引入所需的
酰胺或
硫酰胺基团的过程。