Chemoenzymatic synthesis of α′- and α-acetoxylated cyclic ketones
摘要:
alpha,beta-Unsaturated and saturated cyclic ketones were selectively oxidized at the alpha'- and alpha-positions using Mn(OAc)(3) and Pb(OAc)(4), respectively, resulting in high chemical yields. The resultant racemic alpha'- and alpha-acetoxylated substrates were resolved into corresponding enantiomerically enriched alpha'- and alpha-hydroxylated and acetoxylated compounds with 96-98% ee via PLE hydrolysis. The absolute configurations of alpha'-acetoxy-alpha,beta-unsaturated cyclic ketones were determined by transforming them into the corresponding saturated alpha-acetoxy cyclic ketones of known absolute configuration. (C) 2004 Elsevier Ltd. All rights reserved.
[EN] 1 -OXO-1,2-DIHYDROISOQUINOLIN-7-YL-(5-SUBSTITUTED-THIOPHEN-2-YL)-SULFONAMIDE COMPOUNDS, FORMULATIONS CONTAINING THOSE COMPOUNDS, AND THEIR USE AS AICARFT INHIBITORS IN THE TREATMENT OF CANCERS<br/>[FR] COMPOSÉS 1-OXO-1,2-DIHYDROISOQUINOLÉINE-7-YL-(5-SUBSTITUÉ-THIOPHÉN-2-YL)-SULFONAMIDE, FORMULATIONS CONTENANT CES COMPOSÉS ET LEUR UTILISATION COMME INHIBITEURS D'AICARFT DANS LE TRAITEMENT DE CANCERS
申请人:LILLY CO ELI
公开号:WO2016089670A1
公开(公告)日:2016-06-09
1-Oxo-1,2-dihydroisoquinolin-7-yl-(5-substituted-thiophen-2-yl)-sulfonamide compounds, formulations containing those compounds, and their use as AICARFT inhibitors.
Arginase Inhibitors and Their Therapeutic Applications
申请人:OncoArendi Therapeutics S.A.
公开号:US20170319536A1
公开(公告)日:2017-11-09
Disclosed are small molecule therapeutic compounds that are potent inhibitors of arginase 1 and arginase 2 activity. Also disclosed are pharmaceutical compositions comprising the compounds, and methods for using the compounds for treating or preventing a disease or condition associated with arginase activity.
New organofluorine building blocks: inhibition of the malarial aspartic proteases plasmepsin II and IV by alicyclic α,α-difluoroketone hydrates
作者:Christoph Fäh、Leo A. Hardegger、Lukas Baitsch、W. Bernd Schweizer、Solange Meyer、Daniel Bur、François Diederich
DOI:10.1039/b908489d
日期:——
therapeutic agents againstmalaria has become urgent during the past few decades, due to an increased prevalence of drug-resistant strains of malaria-causing Plasmodium parasites. Possible targets are the hemoglobin-degrading asparticproteases, the plasmepsins. While acyclic α,α-difluoroketone hydrates have been introduced into peptidomimetics to bind to the catalytic Asp dyad of asparticproteases, alicyclic
Enantioselective epoxidation of cyclic 1,3-dienes catalyzed by a sterically and electronically optimized (salen)Mn complex
作者:Sukbok Chang、Richard M Heid、Eric N Jacobsen
DOI:10.1016/s0040-4039(00)75786-8
日期:1994.1
Chiral (salen)Mn(III)Cl complexescatalyze epoxidation of cyclic 1,3-dienes with moderate-to-good enantioselectivity. A new catalyst (2), bearing sterically hindered and electrondonating OSi(iPr)3 (OTIPS) substituents, induces up to 12% higher selectivity than the previously-reported tert-butyl substituted analog 1.
α′-acetoxy α,β-unsaturated cyclopentanone and cyclohexanone have been resolved into the corresponding enantiomericallyenriched α′-hydroxylated and acetoxylated compounds with 96–97% ee via PLE hydrolysis. Stereoselectivity in the palladium(II)-catalyzed reaction between the enantiomericallyenriched α′-acetoxylated compounds and diazomethane has been investigated. In the α′-acetoxylated cyclopentenone