Provided are D
2
or D
3
antagonist compounds and pharmaceutical compositions of formula I
and pharmaceutically acceptable salts thereof, or isomers thereof, wherein R
1
, R
2
and R
3
are as defined herein. The invention further comprises methods for making the compounds of the invention and methods for the treatment of conditions mediated by the dopamine D
2
or D
3
receptor from the compounds of the invention.
提供了D2或D3拮抗剂化合物及其制备方法,以及公式I的制药组合物及其药学上可接受的盐或同分异构体,其中R1、R2和R3如本文所定义。本发明还涉及制备本发明化合物的方法,以及利用本发明化合物治疗由
多巴胺D2或D3受体介导的疾病的方法。