for several biological targets. Formation by cyclodehydration from their monoacylated counterparts was shown to be strongly dependent upon the nature of the acyl group. In the case of a dicyclohexylmethyl group, cyclization was only observed in a p-toluenesulfonic acid/toluene mixture from the symmetrical diacylated precursor. Analysis of the mechanism was begun starting from mixed diacylated derivatives
Composition and method for dyeing dye-susceptible material
申请人:Wella Aktiengesellschaft
公开号:EP1348700A3
公开(公告)日:2004-01-14
Composition for colouring dye-susceptible material (preferably keratinous material), containing at least one pro-dye (especially a glutaramide) and at least one enzyme capable of reacting, cleaving, or modifying the enzymatically-labile functionality in the pro-dye to form a dye substance or a direct dye; as well as a 2-component-kit.
Design, synthesis and structure-activity relationships of beU:/AP/DTD501/BMC/4818nzimidazole derivatives as activators of the AMP-activated protein kinase (AMPK) are presented in this paper. AMPK is the central component of a protein kinase cascade that plays a key role in the regulation of energy balance. Once activated, AMPK initiates a series of responses that are aimed at restoring the energy balance of the cell and recent studies have indicated that AMPK plays an important role in regulation of the whole-body energy metabolism. The following study based on the lead compound S27847 involved modification of three regions of this compound. Preliminary structure activity relationships are being described. (c) 2006 Elsevier Ltd. All rights reserved.
Solid-phase reactions of aromatic amines with carboxylic acids under conditions of shear deformation and high pressure
作者:A. I. Leont'ev、A. A. Zharov、N. P. Chistotina
DOI:10.1007/bf00863592
日期:1992.9
Solid mixtures of carboxylic acids and aromatic amines react under shear deformation at high pressure (to 8 GPa)for form amides, in the case of ortho-phenylenediamine-substituted benzimidazoles are formed. Under these conditions the conversion rates are hundreds of thousands of times higher than when the same processes are carried out in liquid phase. The cyclization reaction is accelerated to a lesser degree than the reaction of formation of the corresponding amide. The increase of the length of the carboxylic acid radical prevents the cyclization reaction.