Compounds are disclosed of formula (I)
wherein
R, is H, C1-6 alkyl, C3.7 cycloalkyl, phenyl optionally substituted by C1-3 alkoxy or phen(C1-4) alkyl in which the phenyl ring is optionally substituted by C1-3 alkoxy;
R2 is H or C1-3 alkyl;
R3 is H or C1-3 alkyl;
R4 and R5 independently represents H, C1-3 alkyl or 2-propenyl; and
n represents zero or 1;
and physiologically acceptable salts and solvates (e.g. hydrates) thereof.
The compounds have potent selective vasoconstrictor activity and are indicated as useful for the treatment of migraine. The compounds may be formulated as pharmaceutical compositions with physiologically acceptable carriers or excipients for administration by any convenient route. Various methods for the preparation of the compounds (I) are disclosed.
公开了式(I)化合物
其中
R,是 H、C1-6 烷基、C3.7 环烷基、任选被 C1-3 烷氧基取代的苯基或苯基(C1-4)烷基,其中苯基环任选被 C1-3 烷氧基取代;
R2 是 H 或 C1-3 烷基;
R3 是 H 或 C1-3 烷基;
R4 和 R5 独立地代表 H、C1-3 烷基或 2-
丙烯基;以及
n 代表 0 或 1;
及其生理上可接受的盐类和溶剂(如
水合物)。
这些化合物具有强效的选择性血管收缩活性,可用于治疗偏头痛。这些化合物可与生理上可接受的载体或赋形剂配制成药物组合物,通过任何方便的途径给药。本文公开了制备化合物(I)的各种方法。