Compounds of formula (I), or salts thereof:
wherein:
X is oxygen or sulphur, or
represents
Y is-CH2-CH2-or-CH=CH-;
n is 1 to 5;
R, is hydrogen or C1-6alkyl;
R2 is hydrogen or C1-4alkyl; and
R3 is C4-9alkyl, C5-8cycloalkyl, or C5-8 cycloalkyl -C1-6alkyl; or
R2 and R3 taken with the carbon atom to which they are joined represent a C5-8cycloalkyl group, having useful pharmacological activity, pharmaceutical compositions containing them and a process for their preparation.
式 (I) 的化合物或其盐类:
其中
X 是氧或
硫,或
代表
Y 是-
CH2- -或-CH=CH-;
n 是 1 至 5;
R 是氢或 C1-6 烷基;
R2是氢或C1-4烷基;和
R3 是 C4-9 烷基、C5-8 环烷基或 C5-8 环烷基 -C1-6 烷基;或
R2 和 R3 与它们连接的碳原子一起代表 C5-8 环烷基,具有有用的药理活性、含有它们的药物组合物及其制备方法。