在本研究中,报道了环庚基取代的N-杂环卡宾配体的钯PEPPSI型配合物的合成和催化性能。使用包括吡啶,咪唑和噻唑衍生物的不同的N-配位体配体来稳定复合物。通过1 H NMR,13 C NMR,IR光谱法和元素分析确定复合物的结构。将所有复合物在水性介质中用于Suzuki-Miyaura交叉偶联反应。在优化反应条件之后,在五种不同的芳基氯衍生物和苯基硼酸的交叉偶联上测试了所有配合物。含吡啶的复合物3a 表现出比其他催化剂更强的催化性能。
lipophilic silver-NHC complexes. Four new complexes were synthesized by the reaction of the corresponding benzimidazolium salts and Ag2O in dichloromethane at room temperature. The synthesized compounds were characterized by 1H NMR, 13C NMR, IR and elemental analysis. The antimicrobial performances of benzimidazolium salts and silver complexes were tested against the standard bacterial strains Enterococcus
We present a novel class of dual modulators of gamma-secretase and peroxisome proliferator-activated receptor gamma (PPAR gamma) based on the structure of 2-(bis(phenethoxy)pyrimidine-2-ylthio)hexanoic acid 8 (IC50(A beta 42) = 22.8 mu M, EC50(PPAR gamma) = 8.3 mu M). The modulation of both targets with approved drugs (i.e., amyloid-beta 42 (A beta 42)-lowering NSAIDs for gamma-secretase and glitazones for PPAR gamma) has demonstrated beneficial effects in in vitro and in vivo models of Alzheimer's disease (AD). However, although NSAIDs and PPAR gamma agonists share similar structural features, no druglike compounds with dual activities as gamma-secretase modulators (GSMs) and PPAR gamma agonists have been designed so far. On the basis of our initial lead structure 8, we present the structure-activity relationships (SARs) of broad structural variations. A significant improvement was reached by the introduction of p-trifluoromethyl substituents at the phenyl residues yielding compound 16 (IC50(A beta 42) = 6.0 mu M, EC50(PPAR gamma) = 11.0 mu M) and the replacement of the two phenyl residues of 8 by cyclohexyl yielding compound 22 (IC50(A beta 42) = 5.1 mu M, EC50(PPAR gamma) = 6.6 mu M).
Trifluorométhylphényltétrahydropyridines substituées à activité anorexigène, un procédé de préparation et compositions pharmaceutiques
申请人:SANOFI S.A.
公开号:EP0060176B1
公开(公告)日:1985-01-02
DERIVES DE LA QUINOLYL PROPYL PIPERIDINE ET LEUR UTILISATION EN TANT QUE ANTIBACTERIENS