New 5-substituted-1-(2-hydroxybenzoyl)-benzotriazoles, potassium channel activators. IV
摘要:
This paper reports the synthesis of a series of new 5-substituted-1-(2-hydroxybenzoyl)-benzotriazoles, which have been tested for their activity as possible activators of potassium channels. In rat aortic rings, the 'opened' derivatives 1a-f, intermediates of synthesis, showed vasorelaxing properties, with appreciable values of potency. However, the most remarkable effects were recorded for the 2-hydroxybenzoylbenzotriazoles 3a-f, which showed full vasorelaxing efficacy and high potency values. The introduction of a 2-hydroxybenzyl substituent in the 1 position of the benzotriazole ring (compound 7) strongly decreased the activity, showing the importance of the electron-acceptor carbonyl function. The best compound, 3b, was further investigated, in order to evaluate the possible mechanism of action involved in the vasodilator activity. In the vascular model, different potassium channel blockers inhibited the effects of the compound, and an increase of the levels of membrane depolarisation induced a significant reduction of the recorded responses. Compound 3b was also tested in a model of isolated rat heart, retroperfused through the aorta and submitted to a global ischemia/reperfusion cycle. In such an experimental condition, 3b showed an interesting cardioprotective activity. All the above observations are in agreement with the hypothesis of a mechanism linked to the activation of potassium channels. (C) 2001 Elsevier Science S.A. All rights reserved.
Mensching, Justus Liebigs Annalen der Chemie, 1881, vol. 210, p. 345
作者:Mensching
DOI:——
日期:——
Huebner; Menschning, Justus Liebigs Annalen der Chemie, 1881, vol. 210, p. 345
作者:Huebner、Menschning
DOI:——
日期:——
ORZALESI G.; SELLERI R.; CALDINI O.; INNOCENTI F.; MAGLI M., BOLL. CHIM. FARM. <BCFA-AI>, 1975, 114, NO 8, 445-449
作者:ORZALESI G.、 SELLERI R.、 CALDINI O.、 INNOCENTI F.、 MAGLI M.
DOI:——
日期:——
MACROPHAGE SCAVENGER RECEPTOR ANTAGONISTS
申请人:SmithKline Beecham Corporation
公开号:EP1100484A1
公开(公告)日:2001-05-23
[EN] MACROPHAGE SCAVENGER RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DES RECEPTEURS DES MONOCYTES MACROPHAGES
申请人:SMITHKLINE BEECHAM CORP
公开号:WO2000003704A1
公开(公告)日:2000-01-27
Macrophage scavenger receptor antagonists are provided. Methods of treating cardiovacular disease comprising administration of the present compounds are also provided. The present compounds inhibit lipid accumulation within macrophage-derived foam cells.