[EN] SAA DERIVATIVE COMPOUND RESTORES ENOS AND INHIBITS OXIDATIVE STRESS-INDUCED DISEASES IN HYPOXIA [FR] COMPOSÉ DÉRIVÉ DE SAA PERMETTANT LE RÉTABLISSEMENT DE L'ENOS ET INHIBANT LES AFFECTIONS INDUITES PAR LE STRESS OXYDATIF DANS L'HYPOXIE
[EN] SAA DERIVATIVE COMPOUND RESTORES ENOS AND INHIBITS OXIDATIVE STRESS-INDUCED DISEASES IN HYPOXIA [FR] COMPOSÉ DÉRIVÉ DE SAA PERMETTANT LE RÉTABLISSEMENT DE L'ENOS ET INHIBANT LES AFFECTIONS INDUITES PAR LE STRESS OXYDATIF DANS L'HYPOXIE
The synthesis of eight novel 1,4‐benzodioxane derivatives is reported. The blocking activity of these compounds was determined on the pre‐ and postsynaptic α‐adrenoceptors of isolated rat vas deferens. Structure‐activity relationships are discussed.
α<sub>1</sub>-Adrenoceptor Antagonists. 4. Pharmacophore-Based Design, Synthesis, and Biological Evaluation of New Imidazo-, Benzimidazo-, and Indoloarylpiperazine Derivatives
As a part of a program aimed at discovering compounds endowed with alpha(1)-adrenoceptor (AR) blocking properties, in this paper we describe the synthesis and biological characterization of the compounds designed to fully match a three-dimensional pharmacophore model for alpha(1)-AR antagonists previously developed by our research group. Accordingly, the structure of trazodone (1), identified during
A series of novel 1,2,3-benzotriazin-4-one derivatives was prepared and evaluated as ligands for 5-HT receptors. Radioligand binding assays proved that the majority of the novel compounds behaved as good to excellent ligands at the 5-HT1A receptor, some of which were selective with respect 5-HT2A and 5-HT2C receptors. Six analogues (1a, 2a, 2b, 2c, 2e and 2i) were selected and further evaluated for their binding affinities on D-1, D-2 dopaminergic and alpha(1)-, alpha(2)-adrenergic receptors. A o-OCH3 derivative (2e) bound at 5-HT1A sites with subnanomolar affinity (IC50 = 0.059 nM) and shows high selectivity over all considered receptors and may offer a new lead for the development of therapeutically efficacious agents. (C) 2000 Elsevier Science Ltd. All rights reserved.
Synthesis and biological activity of benzotriazole derivatives structurally related to trazodone
作者:G Caliendo、R Di Carlo、G Greco、R Meli、E Novellino、E Perissutti、V Santagada
DOI:10.1016/0223-5234(96)88212-2
日期:1995.1
This paper outlines the synthesis and the pharmacological screening of a series of novel 1- and 2-[2-[4-(X)-1-piperazinyl]ethyl]benzotriazoles and 1-[3-[4-(X)-1-piperazinyl]propoxy]benzotriazoles, which are structurally related to trazodone. Anti serotonergic, antiadrenergic and antihistaminic in vitro activity and in vivo analgesic action are described. Some of the investigated compounds show overall pharmacological profiles similar to that of the antidepressant trazodone.
Synthesis of new pyridazinone derivatives and their affinity towards α1–α2-adrenoceptors
A series of 3(2H)-pyridazinone derivatives was evaluated for their affinity in vitro towards alpha(1)-alpha(2)-adrenoceptors by radioligand receptor binding assays. All target compounds showed good affinities for the alpha(1)-adrenoceptor (with K-i values in the subnanomolar range), and a gradual increase in affinity was observed by increasing the polymethylene chain length of this series up to a maximum of six and seven carbon atoms, when the fragment 4-[2-(2-methoxyphenoxy)-ethyl]-1-piperazinyl is linked in 5 position of the 3(2H)-pyridazinone ring, while a slight decrease was found for the higher homologues. Increasing the chain length when the 4-[2-(2-methoxyphenoxy)-ethyl]-1-piperazinyl group is linked in 6 position of the 3(2H)-pyridazinone ring, had a different effect: there is the highest affinity when the polymethylene chain is of four carbon atoms. The alkylic chain, a spacer between the two major constituents of the molecule, can influence the affinity and the selectivity. (C) 1999 Elsevier Science Ltd. All rights reserved.