Structure–activity studies leading to (−)1-(Benzofuran-2-yl)-2-propylaminopentane, ((−)BPAP), a highly potent, selective enhancer of the impulse propagation mediated release of Catecholamines and Serotonin in the brain
摘要:
The catecholaminergic and serotoninergic neurons in the brain change their performance according to the physiological need via a catecholaminergic/serotoninergic activity enhancer (CAE/SAE) mechanism. Phenylethylamine (PEA), tyramine and tryptamine are the presently known endogenous CAE/SAE substances which enhance the impulse propagation mediated release of catecholamines and serotonin in the brain. A PEA derivative, (-)deprenyl (selegiline), known as a selective inhibitor of MAO-B, is for the time being the only CAE/SAE substance in clinical use. Aiming to develop a selective CAE/SAE substance much more potent than (-)deprenyl, a series of new 1-aryl-2-alkylaminoalkanes, structurally unrelated to PEA and the amphetamines, was designed and prepared. Among them, (-)1-(benzofuran-2-yl)-2-propylaminopentane ((-)BPAP) was selected as a promising candidate substance for further studies. (-)BPAP significantly enhanced in rats the impulse propagation mediated release of catecholamines and serotonin in the brain 30 min after acute injection of 0.36 nmol/kg sc. In the shuttle box, (-)BPAP was in rats about 130 times more potent than (-)deprenyl in antagonizing tetrabenazine induced inhibition of performance. (-)BPAP protected cultured hippocampal neurons from the neurotoxic effect of P-amyloid in 10(-14)-10(-15) concentration. (C) 2001 Elsevier Science Ltd. All rights reserved.
Structure–activity studies leading to (−)1-(Benzofuran-2-yl)-2-propylaminopentane, ((−)BPAP), a highly potent, selective enhancer of the impulse propagation mediated release of Catecholamines and Serotonin in the brain
摘要:
The catecholaminergic and serotoninergic neurons in the brain change their performance according to the physiological need via a catecholaminergic/serotoninergic activity enhancer (CAE/SAE) mechanism. Phenylethylamine (PEA), tyramine and tryptamine are the presently known endogenous CAE/SAE substances which enhance the impulse propagation mediated release of catecholamines and serotonin in the brain. A PEA derivative, (-)deprenyl (selegiline), known as a selective inhibitor of MAO-B, is for the time being the only CAE/SAE substance in clinical use. Aiming to develop a selective CAE/SAE substance much more potent than (-)deprenyl, a series of new 1-aryl-2-alkylaminoalkanes, structurally unrelated to PEA and the amphetamines, was designed and prepared. Among them, (-)1-(benzofuran-2-yl)-2-propylaminopentane ((-)BPAP) was selected as a promising candidate substance for further studies. (-)BPAP significantly enhanced in rats the impulse propagation mediated release of catecholamines and serotonin in the brain 30 min after acute injection of 0.36 nmol/kg sc. In the shuttle box, (-)BPAP was in rats about 130 times more potent than (-)deprenyl in antagonizing tetrabenazine induced inhibition of performance. (-)BPAP protected cultured hippocampal neurons from the neurotoxic effect of P-amyloid in 10(-14)-10(-15) concentration. (C) 2001 Elsevier Science Ltd. All rights reserved.
[EN] NOVEL POLYPEPTIDES WITH IMPROVED PROTEOLYTIC STABILITY, AND METHODS OF PREPARING AND USING SAME<br/>[FR] NOUVEAUX POLYPEPTIDES PRÉSENTANT UNE MEILLEURE STABILITÉ ET PROCÉDÉS DE PRÉPARATION ET D'UTILISATION ASSOCIÉS
申请人:UNIV TUFTS
公开号:WO2017075505A2
公开(公告)日:2017-05-04
The present invention includes methods of improving proteolytic stability of a polypeptide, comprising alkylating at least one selected from the group consisting of a N-terminus amino group, the NH group of the N-terminus first internal amide bond, another primary amino group, a thiol group and a thioether group within the polypeptide. The present invention further includes polypeptides incorporating such chemical modifications.
[EN] GLP-2 POLYPEPTIDES WITH IMPROVED PROTEOLYTIC STABILITY, AND METHODS OF PREPARING AND USING SAME<br/>[FR] POLYPEPTIDES GLP-2 PRÉSENTANT UNE MEILLEURE STABILITÉ PROTÉOLYTIQUE ET LEURS PROCÉDÉS DE PRÉPARATION ET D'UTILISATION
申请人:UNIV TUFTS
公开号:WO2017075522A2
公开(公告)日:2017-05-04
The present invention includes methods of improving proteolytic stability of a polypeptide, comprising alkylating at least one selected from the group consisting of a N-terminus amino group, the NH group of the N-terminus first internal amide bond, another primary amino group, a thiol group and a thioether group within the polypeptide. The present invention further includes polypeptides incorporating such chemical modifications.