| abstract |
Tricyclic nitrogen containing compounds, having central nervous system activity of structural formula (I) and pharmaceutically acceptable salts thereof, wherein R1, R2, and R3 are independently hydrogen, C1-6 alkyl, alkenyl, or alkynyl, C3-10 cycloalkyl, or R1 and R2 are joined to form a C3-7 cyclic amine which can contain additional heteroatoms; X is hydrogen, C1-6 alkyl, halogen, hydroxy, alkoxy, cyano, carboxamide, carboxyl, or carboalkoxyl; A is SO2, N, CH, CH2, CHCH3, C=O, C=S, C-SCH3, C=NH, C-NH2, C-NHCH3, C-NHCOOCH3, or C-NHCN; B is CH2, CH, C=O, N, NH or N-CH3; n is 0 or 1; and D is CH, CH2, C=O, O, N, NH or N-CH3. These new compounds are suitable for treating schizophrenia, Parkinson's disease, anxiety, depression or as compounds for lowering blood pressure in animal or human hosts. |