| 摘要 |
Compounds of Formula I and their pharmaceutically acceptable salts having selective dopamine D3 receptor activity suitable for treating central nervous system disorders. Formula I: R1 is independently H or a C1-C8 alkyl including isomeric forms thereof; R2 is H, C1-C3 alkyl, a halogen, OCH3 , OCF3, CF3, CN, SCH3 or NHCOCH3; and R3 is H, C1-C3 alkyl, a halogen, OCH3 , OCF3, CF3, CN, SCH3 or NHCOCH3. |
