24552-04-3Relevant articles and documents
Inhibition of cathepsin D by tripeptides containing statine analogs
Bessodes, Michel,Antonakis, Kostas,Herscovici, Jean,Garcia, Marcel,Rochefort, Henri,Capony, Francoise,Lelievre, Yves,Scherman, Daniel
, p. 329 - 333 (1999)
Various analogs of statine, a remarkable amino acid component of the protease inhibitor pepstatine, were synthesized and evaluated as tripeptide derivatives for their activity against cathepsin D and HIV-1 protease. Copyright (C) 1999 Elsevier Science Inc.
Direct reductive amination of ketones with ammonium salt catalysed by Cp*Ir(iii) complexes bearing an amidato ligand
Dai, Zengjin,Pan, Ying-Min,Wang, Shou-Guo,Yin, Qin,Zhang, Xumu
supporting information, p. 8934 - 8939 (2021/11/04)
A series of half-sandwich Ir(iii) complexes1-6bearing an amidato bidentate ligand were conveniently synthesized and applied to the catalytic Leuckart-Wallach reaction to produce racemic α-chiral primary amines. With 0.1 mol% of complex1, a broad range of ketones, including aryl ketones, dialkyl ketones, cyclic ketones, α-keto acids, α-keto esters and diketones, could be transformed to their corresponding primary amines with moderate to excellent yields (40%-95%). Asymmetric transformation was also attempted with chiral Ir complexes3-6, and 16% ee of the desired primary amine was obtained. Despite the unsatisfactory enantio-control achieved so far, the current exploration might stimulate more efforts towards the discovery of better chiral catalysts for this challenging but important transformation.
Hybrid Organo- and Biocatalytic Process for the Asymmetric Transformation of Alcohols into Amines in Aqueous Medium
Liardo, Elisa,Ríos-Lombardía, Nicolás,Morís, Francisco,Rebolledo, Francisca,González-Sabín, Javier
, p. 4768 - 4774 (2017/07/24)
A hybrid organo- and biocatalytic system for the asymmetric conversion of racemic alcohols into amines was developed. Combining an organocatalyst, AZADO, an oxidant, NaOCl, and an enzyme, ω-transaminase, we implemented a one-pot oxidation-transamination sequential process in aqueous medium. The method showed broad substrate scope and was successfully applied to conventional secondary alcohols and sterically hindered β-substituted cycloalkanols, where a highly stereoselective dynamic asymmetric bioamination enabled us to set up both contiguous stereocenters with very high enantio- and diastereomeric ratio (>90% yield, >99% ee, and up to 49:1 dr).
Selective synthesis of primary amines by reductive amination of ketones with ammonia over supported Pt catalysts
Nakamura, Yoichi,Kon, Kenichi,Touchy, Abeda Sultana,Shimizu, Ken-Ichi,Ueda, Wataru
, p. 921 - 924 (2015/03/18)
Supported platinum catalysts are studied for the reductive amination of ketones under ammonia and hydrogen. For a model reaction with 2-adamantanone, Pt-loaded MoOx/TiO2 (Pt-MoOx/TiO2) shows the highest yield of primary amine. The catalyst is effective for the selective transformation of various aliphatic and aromatic ketones to the corresponding primary amines, which demonstrates the first example of the selective synthesis of primary amines by this reaction. The yield of the amine increases with increase in the negative shift of the C£O stretching band in the infrared spectra of adsorbed acetone on the catalysts, suggesting that Lewis acid sites on the support material play an important role in this catalytic system.
ALKYLATION OF 2-AZAALLYL ANIONS; A VERSATILE PRIMARY AMINE SYNTHESIS
Hornback, Joseph M.,Murugaverl, Balasingam
, p. 5853 - 5856 (2007/10/02)
Imines from primary amines and mesityl 2-pyridyl ketone react with LDA followed by treatment with an alkyl halide and hydrolysis to give the original amine alkylated at the alpha-position.
Process for the production of optically active 3-aminocarboxylic acid esters
-
, (2008/06/13)
Process for the production of an optically active 3-aminocarboxylic acid ester from a β-keto acid ester. The β-keto acid ester is converted with a chiral amine into the corresponding enamine. The enamine is converted by hydrogenation in the presence of a platinum catalyst into the corresponding N-substituted amino acid esters. Such ester mix is converted by means of HCl gas into the hydrochlorides. The latter are neutralized. Then by liberation and isolation from the neutralized products by hydrogenolysis in the presence of a palladium catalyst, the desired optically-active 3-aminocarboxylic acid ester is obtained.