Practical preparation of enantiopure 2-methyl-azetidine-2-carboxylic acid; a γ-turn promoter
摘要:
A robust and practical synthesis of each enantiomer of 2-methyl-azetidine-2-carboxylic acid, based on the use of (S)-phenylglycinol as resolving agent, is described. This synthesis affords practical quantities of this quaternary amino acid suitably N- and C-protected for use in further peptide coupling. Synthetic highlights include the formation of the azetidine ring by intramolecular alkylation and the facile separation of the diastereoisomeric amides derived from phenylglycinol. (C) 2012 Elsevier Ltd. All rights reserved.
Practical preparation of enantiopure 2-methyl-azetidine-2-carboxylic acid; a γ-turn promoter
摘要:
A robust and practical synthesis of each enantiomer of 2-methyl-azetidine-2-carboxylic acid, based on the use of (S)-phenylglycinol as resolving agent, is described. This synthesis affords practical quantities of this quaternary amino acid suitably N- and C-protected for use in further peptide coupling. Synthetic highlights include the formation of the azetidine ring by intramolecular alkylation and the facile separation of the diastereoisomeric amides derived from phenylglycinol. (C) 2012 Elsevier Ltd. All rights reserved.
[EN] AZETIDINE DERIVATIVES USEFUL FOR THE TREATMENT OF METABOLIC AND INFLAMMATORY DISEASES<br/>[FR] DÉRIVÉS D'AZÉTIDINE UTILES POUR LE TRAITEMENT DE MALADIES MÉTABOLIQUES ET INFLAMMATOIRES
申请人:GALAPAGOS NV
公开号:WO2012098033A1
公开(公告)日:2012-07-26
Compounds are disclosed that have a formula represented by the following: These compounds may be prepared as a pharmaceutical composition, and may be used for the prevention and treatment of a variety of conditions in mammals including humans, including by way of non-limiting example inflammatory conditions, infectious diseases, autoimmune diseases, diseases involving impairment of immune cell functions, cardiometabolic diseases, and/or proliferative diseases.
NOVEL COMPOUNDS USEFUL FOR THE TREATMENT OF METABOLIC AND INFLAMMATORY DISEASES
申请人:Sanière Laurent Raymond Maurice
公开号:US20130303515A1
公开(公告)日:2013-11-14
Compounds are disclosed that have a formula represented by the following:
These compounds may be prepared as a pharmaceutical composition, and may be used for the prevention and treatment of a variety of conditions in mammals including humans, including by way of non-limiting example inflammatory conditions, infectious diseases, autoimmune diseases, diseases involving impairment of immune cell functions, cardiometabolic diseases, and/or proliferative diseases.
Compounds useful for the treatment of metabolic and inflammatory diseases
申请人:Sanière Laurent Raymond Maurice
公开号:US08759334B2
公开(公告)日:2014-06-24
Compounds are disclosed that have a formula represented by the following:
These compounds may be prepared as a pharmaceutical composition, and may be used for the prevention and treatment of a variety of conditions in mammals including humans, including by way of non-limiting example inflammatory conditions, infectious diseases, autoimmune diseases, diseases involving impairment of immune cell functions, cardiometabolic diseases, and/or proliferative diseases.
Highly Efficient and Enantioselective Biotransformations of Racemic Azetidine-2-carbonitriles and Their Synthetic Applications
作者:Dong-Hui Leng、De-Xiang Wang、Jie Pan、Zhi-Tang Huang、Mei-Xiang Wang
DOI:10.1021/jo9011656
日期:2009.8.21
Catalyzed by the Rhodococcus erythropolis AJ270 whole cell catalyst in neutral aqueous buffer at 30 degrees C, a number of racemic 1-benzylazetidine-2-carbonitriles, trans-1-benzyl-4-methylazetidine-2-carbonitrile. and 1-benzyl-2-methylazetidine-2-carbonitrile and their amide substrates underwent efficient and enantioselective biotransformations to afford the corresponding azetidine-2-carboxylic acids and their amide derivatives in excellent yields with cc up to >99.5%. The overall excellent, act enantioselectivity of the biocatalytic reactions stemmed from a combined effect of a very active but virtually nonenantioselective nitrite hydratase and a high R-enantioselective amidase involved in microbial whole cells. The synthetic applications have been demonstrated by the nucleophilic ring-opening reactions of azetidiniums of the resulting chiral azetidine-2-carbox amide derivatives for the preparation of alpha,gamma-diamino, alpha-phenoxy-gamma-amino, and alpha-cyano-gamma-amino carboxamides. The intramolecular Cul-catalyzed cross-coupling reaction for the synthesis of azetidine-fused 1,4-benzodiazepin-2-one derivative was also presented.
AZETIDINE DERIVATIVES USEFUL FOR THE TREATMENT OF METABOLIC AND INFLAMMATORY DISEASES