Preparative access to medicinal chemistry related chiral alcohols using carbonyl reductase technology
摘要:
Libraries of highly enantioenriched secondary alcohols in both enantiomeric forms were synthesised by enzymatic reduction of their parent ketones using selectAZyme (TM) carbonyl reductase (CRED) technology. Commercially available CREDs were able to reduce a range of substrate classes efficiently and with very high enantioselectivity. Matching substrate classes to small subsets of CREDs enabled the fast development of preparative bioreductions and the rapid generation of 100-1500 mg samples of chiral alcohols in typically >95% ee and the majority in >= 99.0% ee. The conditions for small scale synthesis were then scaled up to 0.5 kg to deliver one of the chiral alcohols, (S)-1-(4-bromophenyl)-2-chloroethanol, in 99.8% ee and 91% isolated yield. (C) 2013 Elsevier Ltd. All rights reserved.
1-(Aromatic- or heteroaromatic-substituted)-3-(heteroaromatic substituted)-1,3-propanediones and uses thereof
申请人:——
公开号:US20030229079A1
公开(公告)日:2003-12-11
Certain 1-(aromatic- or heteroaromatic-substituted-3-(heteroaromatic substituted)-1,3-propanediones are described as inhibitors of HIV integrase and inhibitors of HIV replication. These compounds are useful in the prevention or treatment of infection by HIV and the treatment of AIDS, either as compounds, pharmaceutically acceptable salts, pharmaceutical composition ingredients, whether or not in combination with other antivirals, immunomodulators, antibiotics or vaccines. Methods of treating AIDS and methods of preventing or treating infection by HIV are also described.
Difluoroalkylation/C–H Annulation Cascade Reaction Induced by Visible-Light Photoredox Catalysis
作者:Jin Li、Jingzhi Chen、Wei Jiao、Guoqiang Wang、Ying Li、Xu Cheng、Guigen Li
DOI:10.1021/acs.joc.6b01825
日期:2016.10.21
report the firstexample of difluoroalkylation/C–H annulation cascade reactions of cyclopropyl olefins induced by visible-light photoredox catalysis regioselectively affording partially hydrogenated naphthalenes and quinolines with a variety of difluorinated side chains. The alkylation reagent could be extended to monofluoro and trifluoro reagents, nitrile and malonate. The regioselectivity was investigated
Highly Enantioselective Borane Reduction of Heteroaryl and Heterocyclic Ketoxime Ethers Catalyzed by Novel Spiroborate Ester Derived from Diphenylvalinol: Application to the Synthesis of Nicotine Analogues
作者:Kun Huang、Francisco G. Merced、Margarita Ortiz-Marciales、Héctor J. Meléndez、Wildeliz Correa、Melvin De Jesús
DOI:10.1021/jo800204n
日期:2008.6.1
An asymmetric synthesis for the preparation of nonracemic amines bearing heterocyclic and heteroaromatic rings is described. A variety of important enantiopure thionyl and arylalkyl primary amines were afforded by the borane-mediated enantioselective reduction of O-benzyl ketoximes using 10% of catalyst 10 derived from (S)-diphenylvalinol and ethylene glycol with excellent enantioselectivity, in up
描述了制备带有杂环和杂芳环的非外消旋胺的不对称合成。使用 10%衍生自 ( S )-二苯基缬氨醇和乙二醇的催化剂10 ,通过硼烷介导的对映选择性还原O-苄基酮肟,得到各种重要的对映纯亚硫酰基和芳烷基伯胺,具有优异的对映选择性,高达 99% ee 。首次不对称还原 3- 和 4-吡啶基衍生的O-苄基酮肟醚的最佳条件是在 10 °C 下在二恶烷中使用 30% 的催化负载量实现的。( S ) -N-乙基降烟碱 ( 3 ) 也由 TIPS 保护的 ( S )-2-氨基-2-吡啶乙醇在 97% ee 中成功合成。
[EN] PHENYL- SULFONYL DERIVATIVES AS MEDIATORS OF TRPA1 RECEPTOR ACTIVITY FOR THE TREATMENT OF PAIN<br/>[FR] DÉRIVÉS DE PHÉNYLSULFONYLE EN TANT QUE MÉDIATEURS DE L'ACTIVITÉ DE RÉCEPTEUR TRPA1 POUR LE TRAITEMENT DE LA DOULEUR
申请人:ORION CORP
公开号:WO2012152983A1
公开(公告)日:2012-11-15
Compounds of formula I, wherein A and R1-R7, are as defined in the claims, exhibit TRPA1 activity and useful as TRPA1 modulators.
Imidazo[1,2-a]pyridines, and process for their preparation
申请人:Schering A.G.
公开号:US04596872A1
公开(公告)日:1986-06-24
This invention relates to novel substituted imidazo[1,2-a]pyridines, most especially novel 8-phenylimidazo[1,2-a]pyridines and a process for their preparation. The compounds of the invention have been found to have cardiotonic antiarrhythmic, CNS stimulant, CNS depressant and other pharmacological effects.