Indolinone combinatorial libraries and related products and methods for the treatment of disease
申请人:Tang Cho Peng
公开号:US20050197382A1
公开(公告)日:2005-09-08
The present invention relates to organic molecules capable of modulating, regulating and/or inhibiting protein kinase signal transduction. Such compounds are useful for the treatment of diseases related to unregulated protein kinase signal transduction, including cell proliferative diseases such as cancer, atherosclerosis, arthritis and restenosis and metabolic diseases such as diabetes. The present invention features indolinone compounds that potently inhibit protein kinases and related products and methods. Inhibitors specific to the FLK protein kinase can be obtained by adding chemical substituents to the 3-[(indole-3-yl)methylene]-2-indolinone, in particular at the 1′ position of the indole ring. Indolinone compounds that specifically inhibit the FLK and platelet derived growth factor protein kinases can harbor a tetrahydroindole or cyclopentano-b-pyrrol moiety. Indolinone compounds that are modified with substituents, particularly at the 5 position of the oxindole ring, can effectively activate protein kinases. This invention also features novel hydrosoluble indolinone compounds that are tyrosine kinase inhibitors and related products and methods.
Compositions cosmétiques et pharmaceutiques contenant des dérivés lipophiles du benzylidène camphre et nouveaux dérivés lipophiles du benzylidène camphre
申请人:L'OREAL
公开号:EP0390681A1
公开(公告)日:1990-10-03
L'invention concerne des compositions cosmétiques et pharmaceutiques contenant les dérivés de benzylidène camphre de formule :
où R₁ désigne H, OH, alkyle en C₁-C₃ ou alcoxy en C₁-C₈, R₃ désigne OH, alkyle en C₁-C₃ ou alcoxy en C₁-C₈, ou bien lorsque R₁ désigne H ou OH, R₃ peut représenter alkyle en C₁-C₈, R₂ et R₄ désignent H ou OH, l'un au moins des radicaux R₂ et R₄ représentant OH.
Les composés (I) sont des filtres solaires à large bande, des anti-oxydants, et sont utiles dans le traitement des inflammations et allergies cutanées.
Understanding the Cardioprotective Effects of Flavonols: Discovery of Relaxant Flavonols without Antioxidant Activity
作者:Cheng Xue Qin、Xingqiang Chen、Richard A. Hughes、Spencer J. Williams、Owen L. Woodman
DOI:10.1021/jm070352h
日期:2008.3.1
3 ',4 '-Dihydroxyflavonol (DiOHF) is a cardioprotective flavonol that can reduce injury after myocardial ischemia and reperfusion and thus is a promising small molecule for the treatment of cardiovascular disease. Like all vasoactive flavonols reported to date, DiOHF is both relaxant and antioxidant, hindering investigation of the relative contribution of each activity for the prevention of reperfusion injury. This study investigates structure-activity relationships of variations at the 3 ' and 4 ' positions of the B ring of DiOHF and vasorelaxant and antioxidant activities. Relaxation of rat isolated aortic rings precontracted with KCl revealed that the most active flavonols were those with a 4 '-hydroxyl group, with the opening of potassium channels as a possible contributing mechanism. For the antioxidant activity, with the exception of DiOHF, none of the flavonols investigated were able to significantly scavenge superoxide radical, and none of the three most potent vasorelaxant flavonols could prevent oxidant-induced endothelial dysfunction. The discovery of single-acting vasorelaxant flavonols without antioxidant activity, in particular 4 '-hydroxy-3 '-methoxyflavonol, will assist in investigating the mechanism of flavonol-induced cardioprotection.