The invention provides compounds of the general formula (I)
wherein
Ar represents a phenyl group optionally substituted by one or two substituents selected from halogen atoms, or C1-3 alkyl or C1-3 alkoxy groups, or by an alkylenedioxy group of formula -O(CH2)pO- where p is 1 or 2;
R, and R2 each represents a hydrogen atom or C1-3 alkyl group with the proviso that the sum total of carbon atoms in R, and R2 is not more than 4;
m is an integer from 2 to 8 and
n is an integer from 1 to 7 with the proviso that the sum total of m + n is 4 to 12;
Q represents a group of formula
where
R3 represents a hydrogen atom or a C1-3 alkyl group, Ra represents:
and Rb represents:
where F4 represents a straight or branched C2-3 alkylene chain: and physiologically acceptable salts and solvates thereof.
The compounds of formula (l) have a selective stimulant action at (β2-adrenoreceptors and are useful, in particular in the treatment of diseases associated with reversible airways obstruction such as asthma and chronic bronchitis.
本发明提供通式 (I) 的化合物
其中
Ar 代表苯基,可任选被一个或两个选自卤素原子、或 C1-3 烷基或 C1-3 烷氧基、或式 -O(
CH2)pO- 的亚烷基二氧基(其中 p 为 1 或 2)的取代基取代;
R 和 R2 各自代表氢原子或 C1-3 烷基,但 R 和 R2 中的碳原子总数不超过 4;
m 是 2 至 8 的整数,且
n 为 1 至 7 的整数,但 m+n 的总和为 4 至 12;
Q 代表一个式组
其中
R3 代表氢原子或 C1-3 烷基,Ra 代表
和 Rb 代表
其中 F4 代表直链或支链 C2-3 烯链:及其生理上可接受的盐类和溶剂。
式(l)化合物对(β2-
肾上腺素受体)具有选择性刺激作用,特别适用于治疗与可逆性气道阻塞有关的疾病,如哮喘和慢性支气管炎。