1-2-(Pyridinyl)piperazine derivatives with antianaphylactic, antibronchospastic and mast cell stabilizing activities
摘要:
New 1-(2-pyridinyl)piperazine derivatives were synthesized and tested as inhibitors of the reaginic passive cutaneous anaphylaxis in the rat (PCA), of the histamine-induced bronchospasm in the guinea pig, and of the rat mesenteric mast cell degranulation induced by compound 48/80. On the basis of test results, a series of N-(substituted phenyl)-omega-[4-(2-pyridinyl)-1-piperazinyl]alkanamides was prepared. The nature of substituents at the anilide ring strongly influenced mast cell stabilizing activity, whereas it was less determining in the case of the other two tests. No clear correlation between the most common physicochemical parameters (pi, sigma, Vw volume) of substituents and activity could be detected. With regard to the position of substituents at the anilide ring, the rank order of potency, in the PCA and bronchoconstriction tests, was para greater than meta greater than ortho. Introduction of substituents in the 1-(2-pyridinyl)piperazinyl moiety of the N-(substituted phenyl)propanamide derivatives hardly affected activity, or the effect was deleterious. Some of the new compounds exhibited a simultaneous remarkable activity in all the three assays employed.
[EN] 1,2-DIHYDRO-1-OXOPHTHALAZINYL DERIVATIVES HAVING BIOLOGICAL ACTIVITY ON SEROTONIN RECEPTORS 5-HT2A AND 5-HT2C, AND PREPARATION THEREOF<br/>[FR] DÉRIVÉS DE 1,2-DIHYDRO-1-OXOPHTHALAZINYLE PRÉSENTANT UNE ACTIVITÉ BIOLOGIQUE SUR LES RÉCEPTEURS DE LA SÉROTONINE 5-HT2A ET 5-HT2C, ET LEUR PRÉPARATION
申请人:DONGBU HITEK CO LTD
公开号:WO2008093920A2
公开(公告)日:2008-08-07
[EN] The present invention relates to a novel 1,2-dihydro-1-oxophthalazinyl piperazine compound having biological activity as serotonin receptor antagonist, a preparation method of the compound and a pharmaceutical composition for the treatment and prevention of central nervous system diseases comprising the compound. [FR] L'invention concerne un nouveau composé de 1,2-dihydro-1-oxophthalazinyle pipérazine présentant une activité biologique sur les récepteurs de la sérotonine lui permettant de servir d'antagoniste à de tels récepteurs. L'invention concerne également un procédé de préparation de ce composé et une composition pharmaceutique comprenant ce composé servant à traiter et à prévenir les maladies du système nerveux central.
1-2-(Pyridinyl)piperazine derivatives with antianaphylactic, antibronchospastic and mast cell stabilizing activities
New 1-(2-pyridinyl)piperazine derivatives were synthesized and tested as inhibitors of the reaginic passive cutaneous anaphylaxis in the rat (PCA), of the histamine-induced bronchospasm in the guinea pig, and of the rat mesenteric mast cell degranulation induced by compound 48/80. On the basis of test results, a series of N-(substituted phenyl)-omega-[4-(2-pyridinyl)-1-piperazinyl]alkanamides was prepared. The nature of substituents at the anilide ring strongly influenced mast cell stabilizing activity, whereas it was less determining in the case of the other two tests. No clear correlation between the most common physicochemical parameters (pi, sigma, Vw volume) of substituents and activity could be detected. With regard to the position of substituents at the anilide ring, the rank order of potency, in the PCA and bronchoconstriction tests, was para greater than meta greater than ortho. Introduction of substituents in the 1-(2-pyridinyl)piperazinyl moiety of the N-(substituted phenyl)propanamide derivatives hardly affected activity, or the effect was deleterious. Some of the new compounds exhibited a simultaneous remarkable activity in all the three assays employed.