The first example of manganese-catalyzed C-alkylation of the carboxylic acid derivatives is reported. The bench-stable homogeneous manganese complex enables the transformation of the renewable alcohol and carboxylic acid derivative feedstock to higher value esters and amides. The reaction operates via hydrogen autotransfer and ideally produces water as the only side product. Importantly, aliphatic-
Gamma-hydroxy-2-(fluoroalkylaminocarbonyl)-1-piperazinepentanamides and uses thereof
申请人:Merck & Co., Inc.
公开号:US06642237B1
公开(公告)日:2003-11-04
&ggr;-Hydroxy-2-(fluoroalkylaminocarbonyl)-1-piperazinepentanamide compounds are inhibitors of HIV protease and inhibitors of HIV replication. These compounds are useful in the prevention or treatment of infection by HV and the treatment of AIDS, either as compounds, pharmaceutically acceptable salts, pharmaceutical composition ingredients, whether or not in combination with other antivirals, immunomodulators, antibiotics or vaccines. Methods of treating AIDS and methods of preventing or treating infection by HIV are also described. These compounds are effective against HIV viral mutants which are resistant to HIV protease inhibitors currently used for treating AIDS and HIV infection.
Rhodium-Catalyzed Heck-Type Coupling of Boronic Acids with Activated Alkenes in an Aqueous Emulsion
作者:Mark Lautens、John Mancuso、Harpreet Grover
DOI:10.1055/s-2004-829161
日期:——
Intermolecular couplings between arylboronic acids and activated alkenes catalyzed by a water-soluble tert-butyl amphosrhodium complex were found to progress at room temperature and generated Heck-type products with high yields and excellent selectivity. Substitution on the alkene component encouraged the formation of products arising from a conjugate addition-protonation process. In the case of Heck
Borrowing hydrogen: a catalytic route to C–C bond formation from alcohols
作者:Michael G. Edwards、Rodolphe F. R. Jazzar、Belinda M. Paine、Duncan J. Shermer、Michael K. Whittlesey、Jonathan M. J. Williams、Dean D. Edney
DOI:10.1039/b312162c
日期:——
Ruthenium complexes have been shown to perform efficient transfer hydrogenation reactions between alcohols and alkenes; in combination with an in situ Wittig reaction, indirectformation of C-Cbonds has been achieved fromalcohols.
Imidazolyl-alkenoic acids useful as angiotensin II receptor antagonists
申请人:SmithKline Beecham Corporation
公开号:US05418250A1
公开(公告)日:1995-05-23
Angiotensin II receptor antagonists having the formula: ##STR1## which are useful in regulating hypertension and in the treatment of congestive heart failure, renal failure, and glaucoma, pharmaceutical compositions including these antagonists, and methods of using these compounds to produce angiotensin II receptor antagonism in mammals.