A highly enantioselective asymmetric hydrogenation route to β-(2R,3S)-methyltryptophan
摘要:
Asymmetric hydrogenation of a protected (Z)-dehydro-beta-methyltryptophan derivative 2 with (R,R)-Me-DuPHOS-Rh catalysis was achieved in 97 % ee. Deprotection then afforded (2R,3S)-beta-methyltryptophan 1. (C) 1998 Elsevier Science Ltd. All rights reserved.
A highly enantioselective asymmetric hydrogenation route to β-(2R,3S)-methyltryptophan
摘要:
Asymmetric hydrogenation of a protected (Z)-dehydro-beta-methyltryptophan derivative 2 with (R,R)-Me-DuPHOS-Rh catalysis was achieved in 97 % ee. Deprotection then afforded (2R,3S)-beta-methyltryptophan 1. (C) 1998 Elsevier Science Ltd. All rights reserved.
[EN] NOVEL PYRIDIN-2(1H)ONE DERIVATIVES, THEIR PREPARATION AND THEIR USE FOR THE TREATMENT OF PAIN<br/>[FR] NOUVEAUX DÉRIVÉS DE PYRIDIN-2(1H)ONE, LEUR PRÉPARATION ET LEUR UTILISATION POUR LE TRAITEMENT DE LA DOULEUR
申请人:INST NAT SANTE RECH MED
公开号:WO2021064186A1
公开(公告)日:2021-04-08
The present invention concerns novel pyridin-2(1H)one derivatives, their process of preparation and their use in therapeutics, in particular as agents for treating and/or preventing pain.
Mechanical Allodynia (MA), a frequent chronic pain symptom caused by innocuous stimuli, constitutes an unmet medical need, as treatments using analgesics available today are not always effective and can be associated with important side-effects. A series of 3,5-disubstituted pyridin-2(1H)-ones was designed, synthesized and evaluated in vivo toward a rat model of inflammatory MA. We found that the series rapidly and strongly prevented the development of MA. 3-(2-Bromophenyl)-5-(phenylamino)pyridin-2(1H)-one 69, the most active compound of the series, was also able to quickly reverse neuropathic MA in rats. Next, when 69 was evaluated toward a panel of 50 protein kinases (PK) in order to identify its potential biological target(s), we found that 69 is a p38 alpha MAPK inhibitor, a PK known to contribute to pain hypersensitivity in animal models. 3,5-Disubstituted pyridin-2(1H)-ones thus could represent a novel class of analgesic for the treatment of MA. (C) 2019 Elsevier Masson SAS. All rights reserved.
ORGANIC ELECTROLUMINESCENT DEVICE
申请人:Nippon Steel & Sumikin Chemical Co., Ltd.
公开号:EP2617724B1
公开(公告)日:2017-07-05
NITROGENATED AROMATIC COMPOUND, ORGANIC SEMICONDUCTOR MATERIAL, AND ORGANIC ELECTRONIC DEVICE
申请人:Nippon Steel & Sumikin Chemical Co., Ltd.
公开号:EP2628743B1
公开(公告)日:2016-02-24
Synthesis of (3-Indolyl)heteroaromatics by Suzuki-Miyaura Coupling and Their Inhibitory Activity in Lipid Peroxidation
A variety of (3-indolyl)heteroaromatic compounds were synthesized by Suzuki-Miyaura coupling of 3-indolylboronic acid and halogenated heteroaromatics. 2-(3-Indolyl)thiophene showed potent inhibitory activity against lipid peroxidation by rat liver microsome.