[EN] 1-ALKYLPIPERAZINYL-PYRROLIDIN-2, 5-DIONE DERIVATIVES AS ADRENERGIC RECEPTOR ANTAGONIST [FR] DERIVES DE 1-ALKYLPIPERAZINYL-PYRROLIDIN-2,5-DIONE UTILES COMME ANTAGONISTES DU RECEPTEUR ADRENERGIQUE
[EN] 1-ALKYLPIPERAZINYL-PYRROLIDIN-2, 5-DIONE DERIVATIVES AS ADRENERGIC RECEPTOR ANTAGONIST [FR] DERIVES DE 1-ALKYLPIPERAZINYL-PYRROLIDIN-2,5-DIONE UTILES COMME ANTAGONISTES DU RECEPTEUR ADRENERGIQUE