| 摘要 |
This invention relates to dopamine D2 agonists of formula (I), wherein: Y is hydrogen, halogen, or C1-C6 alkoxy; R1 is hydrogen or C1-C6 alkyl; X is methylene, oxygen or carbonyl; Ar is phenyl or thienyl, each optionally substituted with 1-2 groups independently selected from C1-C6 alkoxy, C1-C6 alkyl, halogen, trifluoromethyl and phenyl; n=0-4, or pharmaceutically acceptable salts thereof. Dopamine D2 agonists are useful in the treatment of schizophrenia, Tourette's syndrome, drug and alcohol addiction, and also useful in the treatment of Parkinson's disease.
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