| 摘要 |
Trans-hexahydrobenzo[a]phenanthridine of the formula <IMAGE> wherein R is hydrogen or C1-C4 alkyl; R1 is hydrogen or a phenoxy protecting group, X is fluoro, chloro, bromo, iodo or a group of the formula-OR5, and R2, R3, and R4 are independently selected from the group consisting of hydrogen, C1-C4 alkyl, phenyl, fluoro, chloro, bromo, iodo, or a group -OR1 provided that at least one of R2, R3, and R4 are other than hydrogen, are novel ligands for dopamine receptors. |
