Cyclohexenyl- and dehydropiperidinyl-alkynyl pyridines as potent metabotropic glutamate subtype 5 (mGlu5) receptor antagonists
摘要:
Structure-activity relationship studies leading to the discovery of novel mGlu5 receptor antagonists are described. These compounds show high in vitro potency, have good in vivo receptor occupancy, and a reasonable intravenous pharmacokinetic profile. (c) 2005 Elsevier Ltd. All rights reserved.
The hydration of α,β‐unsaturatedketones with water proceeded efficiently in the presence of In(OTf)3 (20 mol%) in aqueous media to afford synthetically versatile β‐hydroxyketones in moderate to good yields with good functional group compatibility. The method also can be extended to the hydroalkoxylation of α,β‐unsaturatedketones with various alcohols for the efficient synthesis of β‐alkoxyketones as
Chromium(III)-Catalyzed Addition of Water and Alcohol to α,β-Unsaturated Ketones for the Synthesis of β-Hydroxyl and β-Alkoxyl Ketones in Aqueous Media
An efficient chromium(III) chloride-catalyzed Michael-type reaction of water or alcohol with α,β-unsaturatedketones is developed. A variety of α,β-unsaturatedketones effectively reacted with either water or alcohols to give the corresponding β-hydroxyl ketones or β-alkoxyl ketones in modest to high yields with excellent compatibility to various functional groups. The approach was further utilized
Niacin Receptor Agonists, Compositions Containing Such Compounds and Methods of Treatment
申请人:Raghavan Subharekha
公开号:US20090062269A1
公开(公告)日:2009-03-05
The present invention encompasses compounds of Formula I: as well as pharmaceutically acceptable salts and hydrates thereof, that are useful for treating atherosclerosis, dyslipidemias and the like. Pharmaceutical compositions and methods of use are also included.
Reductions made easy: A highly efficientiron catalyst effects the homogeneous hydrogenation of ketones under very mild conditions (see scheme). A mechanism including the insertion of the ketone into the FeH bond, followed by addition of hydrogen to a dearomatized intermediate is proposed.
还原变得容易:高效的铁催化剂在非常温和的条件下实现酮的均相加氢(参见方案)。提出了一种机制,包括将酮插入 Fe H 键,然后向脱芳构化中间体添加氢。
Concentration and solvent effects on the conformational equilibrium of cis-3-ethoxycyclohexanol by 1H NMR and IR spectroscopy
作者:Paulo R. de Oliveira、Danilo S. Ortiz、Roberto Rittner
DOI:10.1016/j.molstruc.2005.11.009
日期:2006.5
Abstract NMR data, in CCl 4 , show that an increase in the concentration of cis -3-ethoxycyclohexanol ( cis -3-ECH) shifts the conformationalequilibrium from the ax–ax conformer (X ax–ax =51% at 0.01 mol L −1 ), stabilized by an intramolecular hydrogen bond (IAHB), to the eq–eq conformer (X eq–eq =67% at 0.40 mol L −1 ), which forms intermolecular hydrogen bonds (IEHB), as confirmed by IR data. The