BENZO (4,5) PYRANO (2,3C) PYRROLES, PROCESSES FOR THEIR PREPARATION AND PHARMACEUTICAL PREPARATIONS CONTAINING SAME

摘要

Benzo[4,5]pyrano[2,3c]pyrrole derivatives of the general formula: I or pharmaceutically acceptable acid addition salts thereof, in which R1 and R2 represent hydrogen, alkyl, alkoxy, aralkoxy, hydroxy, halogen, methylenedioxy or acyloxy, and R3 represents hydrogen, alkyl, aralkyl or aminoalkyl, are potent dopamine agonists.