4-amino substituted phenoxyalkyl carboxylic acid, ester, and alcohol
申请人:Warner-Lambert Company
公开号:US05177106A1
公开(公告)日:1993-01-05
Novel 4-amino substituted phenoxyalkyl carboxylic acid, ester, and alcohol derivatives are described, as well as methods for the preparation and pharmaceutical composition of same, which are useful in preventing the intestinal absorption of cholesterol and thus are useful in the treatment of hypercholesterolemia and atherosclerosis.
Easy, efficient, and economic synthesis of anilines remains an important challenge in synthetic chemistry. In this study, a Ni(OAc)2-bipyridine complex is shown to readily catalyze the amination of aryl halides with ammonium salts under direct excitation of light, allowing a broad array of aryl chlorides and bromides to be converted into the corresponding primary (hetero)arylamines in the absence of
stereocentres, enantioselective synthesis of multifunctional α-tertiary amines remains underdeveloped. Enantioenriched α-disubstituted α-ethynylamines are attractive synthons for constructing chiral α-tertiary amines and azacycles, but methods for their catalytic enantioselective synthesis need to be expanded. Here we describe an enantioselective asymmetric Cu(I)-catalysed propargylicamination (ACPA) of
Amines are among the most fundamental motifs in chemical synthesis, and the introduction of amine building blocks via selective C—C bond cleavage allows the construction of nitrogen compounds from simple hydrocarbons throughdirect skeleton modification. Herein, we report a novel method for the preparation of anilines from alkylarenes via Schmidt-type rearrangement using redox-active amination reagents
Novel N-(substituted-phenyl)-5-(substituted-2,5-dimethylphenoxy)-2,2-dimethylpen tan amides which are useful in preventing the intestinal absorption of cholesterol and also increasing high-density lipoprotein (HDL) cholesterol, as well as novel pharmaceutical compositions and methods of use, as well as processes for their manufacture are herein described.