Competitive Formation of β-Amino Acids, Propenoic, and Ylidenemalonic Acids by the Rodionov Reaction from Malonic Acid, Aldehydes, and Ammonium Acetate in Alcoholic Medium
作者:A. V. Lebedev、A. B. Lebedeva、V. D. Sheludyakov、E. A. Kovaleva、O. L. Ustinova、I. B. Kozhevnikov
DOI:10.1007/s11176-005-0377-9
日期:2005.7
The Rodionov reaction of 49 available aliphatic and aromatic aldehydes with malonic acid and ammonium acetate in alcoholic medium, resulting in formation of β-amino acids, propenoic, and ylidenemalonic acids, was studied. Certain regioselectivity regularities of the reaction were revealed. Among the variety of ketones studied, cyclohexanone is the only whose reaction yields a β-amino acid. Unusual dehydrofluorination of 6-chloro-2-fluorocinnamic acid under the Rodionov reaction was discovered.
Biocatalytic approach to enantiomerically pure β-amino acids
作者:Vadim A. Soloshonok、Nataly A. Fokina、Antonyna V. Rybakova、Irine P. Shishkina、Sergey V. Galushko、Alexander E. Sorochinsky、Valery P. Kukhar、Mariya V. Savchenko、Vytas K. Švedas
DOI:10.1016/0957-4166(95)00204-3
日期:1995.7
β-Aryl-β-amino acids were prepared in good chemical yield and high enantiomeric purity (>95% ee) via penicillin acylase-catalyzed hydrolysis of the corresponding N-phenylacetyl derivatives. The (R)-enantiomers were the fast-reacting isomers in all cases studied. The biocatalytic procedure described employs very simple set of reactions using inexpensive commercially available chemicals and enzyme, and
[EN] BETA-AMINO ACID DERIVATIVES FOR TREATMENT OF DIABETES<br/>[FR] DÉRIVÉS D'ACIDE BÊTA-AMINO POUR LE TRAITEMENT DU DIABÈTE
申请人:MERCK PATENT GMBH
公开号:WO2009092432A1
公开(公告)日:2009-07-30
Novel heterocyclic compounds of the Formula (I) in which R1, R2, R2', R2', R3, R4, R5, R6, R7 and R8 have the meanings indicated in Claim 1, are activators of glucokinase and can be used for the prevention and/or treatment of Diabetes Typ 1 and 2, obesity, neuropathy and/or nephropathy.
Beta-amino acid derivatives for treatment of diabetes
申请人:Bender Stefan
公开号:US08431602B2
公开(公告)日:2013-04-30
Novel heterocyclic compounds of the formula I
in which R1, R2, R2′, R2″, R3, R4, R5, R6, R7 and R8 have the meanings indicated in Claim 1,
are activators of glucokinase and can be used for the prevention and/or treatment of Diabetes Typ 1 and 2, obesity, neuropathy and/or nephropathy.
BETA-AMINO ACID DERIVATIVES FOR TREATMENT OF DIABETES
申请人:Bender Stefan
公开号:US20100331346A1
公开(公告)日:2010-12-30
Novel heterocyclic compounds of the formula I
in which R
1
, R
2
, R
2′
, R
2″
, R
3
, R
4
, R
5
, R
6
, R
7
and R
8
have the meanings indicated in Claim
1,
are activators of glucokinase and can be used for the prevention and/or treatment of Diabetes Typ 1 and 2, obesity, neuropathy and/or nephropathy.