[EN] TETRAHYDRO-BETA-CARBOLINONE DERIVATIVES AND PROCESS FOR PREPARING THE SAME [FR] DERIVES DE TETRAHYDRO-BETA-CARBOLINONE ET PROCEDE PERMETTANT DE LES PREPARER
[EN] TETRAHYDRO-BETA-CARBOLINONE DERIVATIVES AND PROCESS FOR PREPARING THE SAME [FR] DERIVES DE TETRAHYDRO-BETA-CARBOLINONE ET PROCEDE PERMETTANT DE LES PREPARER