Enzymatic Racemization of Amines Catalyzed by Enantiocomplementary ω-Transaminases
作者:Dominik Koszelewski、Barbara Grischek、Silvia M. Glueck、Wolfgang Kroutil、Kurt Faber
DOI:10.1002/chem.201001602
日期:2011.1.3
A strategy for the biocatalytic racemization of primary α‐chiral amines was developed by employing a pair of stereocomplementary PLP‐dependent ω‐transaminases. The interconversion of amine enantiomers proceeded through reversible transamination by a prochiral ketone intermediate, either catalyzed by a pair of stereocomplementary ω‐transaminases or by a single enzyme possessing low stereoselectivity
[EN] SUBSTITUTED 1,3-PHENYL HETEROARYL DERIVATIVES AND THEIR USE IN THE TREATMENT OF DISEASE<br/>[FR] DÉRIVÉS DE 1,3-PHÉNYL HÉTÉROARYLE SUBSTITUÉS ET LEUR UTILISATION DANS LE TRAITEMENT D'UNE MALADIE
申请人:NOVARTIS AG
公开号:WO2021038426A1
公开(公告)日:2021-03-04
The invention relates to heterocyclic compounds of the formula (I) in which all of the variables are as defined in the specification; capable of modulating the ctivity of TMEM16a. The invention further provides a method for manufacturing compounds of the invention, and its therapeutic uses. The invention further provides methods to their preparation, to their medical use, in particular to their use in the treatment and management of diseases or disorders including COPD, bronchiectasis, asthma, cystic fibrosis, primary ciliary dyskinesia, chronic bronchitis, cystic fibrosis, primary ciliary dyskinesia, respiratory tract infections (acute and chronic; viral and bacterial), lung carcinoma.
A Chemoenzymatic Approach to Enantiomerically Pure Amines Using Dynamic Kinetic Resolution: Application to the Synthesis of Norsertraline
作者:Lisa K. Thalén、Dongbo Zhao、Jean-Baptiste Sortais、Jens Paetzold、Christine Hoben、Jan-E. Bäckvall
DOI:10.1002/chem.200802303
日期:2009.3.23
Dynamic transformation: A racemization catalyst and the enzyme Candida antarctica lipase B (CALB) were combined in a one‐pot dynamic kineticresolution (DKR) of primary amines, which were transformed to their corresponding amides in up to 95 % yield and >99 % ee. This chemoenzymatic DKR was also applied to the synthesis of norsertraline (see scheme).
Dynamic Kinetic Resolution of Primary Amines with a Recyclable Pd Nanocatalyst for Racemization
作者:Mahn-Joo Kim、Won-Hee Kim、Kiwon Han、Yoon Kyung Choi、Jaiwook Park
DOI:10.1021/ol070130d
日期:2007.3.1
A practical procedure for the dynamic kinetic resolution (DKR) of primary amines has been developed. This procedure employs a palladium nanocatalyst as the racemization catalyst, a commercial lipase (Novozym-435) as the resolution catalyst, and ethyl acetate or ethyl methoxyacetate as the acyldonor. Eleven primary amines and one amino acid amide have been efficiently resolved with good yields (85-99%)
作者:Guohua Hou、Francis Gosselin、Wei Li、J. Christopher McWilliams、Yongkui Sun、Mark Weisel、Paul D. O’Shea、Cheng-yi Chen、Ian W. Davies、Xumu Zhang
DOI:10.1021/ja903319r
日期:2009.7.29
N-H ketoimines 3a-3v are readily prepared in high yield via organometallic addition to nitrites and isolated as corresponding bench-stable hydrochloride salts. Homogeneous asymmetric hydrogenation of unprotected N-H ketoimines 3a-3v using Ir-(S,S)-f binaphane as catalyst provides chiral amines 4a-4v in 90-95% yield with enantioselectivities up to 95% ee.