Compounds of formula (I)
and pharmaceutically acceptable salts thereof, wherein R
1
, R
2
and R
3
are as defined in the specification, are useful in treating conditions or disorders prevented by or ameliorated by positive allosteric modulation of the γ-aminobutyric acid B (GABA-B) receptor. Methods for making the compounds are described. Also described are pharmaceutical compositions of compounds of formula (I), and methods for using such compounds and compositions.
式(I)的化合物及其药用盐,其中R1、R2和R3如规范中定义的那样,可用于治疗通过或通过正向变构调节γ-
氨基
丁酸B(
GABA-B)受体预防或改善的症状或疾病。描述了制备这些化合物的方法。还描述了式(I)的化合物的药物组合物,以及使用这些化合物和组合物的方法。