Asymmetric transfer hydrogenation of α,β-unsaturated, α-tosyloxy and α-substituted ketones
作者:Philip Peach、David J. Cross、Jennifer A. Kenny、Inderjit Mann、Ian Houson、Lynne Campbell、Tim Walsgrove、Martin Wills
DOI:10.1016/j.tet.2005.11.036
日期:2006.2
Asymmetric transferhydrogenation of cyclic and acyclic α,β-unsaturatedketones catalysed by η6-p-cymene/ruthenium(II) and η5-pentamethylcyclopentadienyl/rhodium(III) complexes have been investigated. Cyclicα,β-unsaturatedketones appeared to be more suitable substrates for the synthesis of enantiomerically pure allylic alcohols than do acyclic α,β-unsaturatedketones. A proposed mechanism for the
环状和无环α的不对称转移氢化,β不饱和酮由η催化6 - p -cymene /钌(II)和η 5 -五甲基/铑(III)络合物进行了研究。环状α,β-不饱和酮似乎比无环α,β-不饱和酮更适合用于合成对映体纯的烯丙基醇。讨论了一种由α-甲苯磺酰氧基和卤素取代的苯乙酮形成4-苯基-[1,3]-二氧戊环-2-酮的机理。提出了进一步研究减少α-甲苯磺酰氧基苯乙酮范围和α-取代酮的动态动力学拆分的结果。
Asymmetric Bioreduction of Alkenes Using Ene–Reductases YersER and KYE1 and Effects of Organic Solvents
作者:Yanto Yanto、Christoph K. Winkler、Stephanie Lohr、Mélanie Hall、Kurt Faber、Andreas S. Bommarius
DOI:10.1021/ol200394p
日期:2011.5.20
activated alkenes by KYE1 from Kluyveromyces lactis and Yers-ER from Yersinia bercovieri, two ene–reductasesfrom the OldYellowEnzymefamily, showed a broad substrate spectrum with a moderate to excellent degree of stereoselectivity. Both substrate- and enzyme-based stereocontrols were observed to furnish opposite stereoisomeric products. The effects of organic solvents on enzyme activity and stereoselectivity
[EN] HETEROCYCLIC DERIVATIVES FOR THE TREATMENT OF CYSTIC FIBROSIS<br/>[FR] DÉRIVÉS HÉTÉROCYCLIQUES DESTINÉS AU TRAITEMENT DE LA FIBROSE KYSTIQUE
申请人:FONDAZIONE ST ITALIANO TECNOLOGIA
公开号:WO2018167690A1
公开(公告)日:2018-09-20
The present invention relates to compounds of Formula (I) or pharmaceutically acceptable salts or solvates thereof: It further discloses a pharmaceutical composition comprising the compounds of Formula (I) and their uses, in particular to modulate CFTR protein or ABC protein activities.
Expanding Insight into Asymmetric Palladium-Catalyzed Allylic Alkylation of N-Heterocyclic Molecules and Cyclic Ketones
作者:Nathan B. Bennett、Douglas C. Duquette、Jimin Kim、Wen-Bo Liu、Alexander N. Marziale、Douglas C. Behenna、Scott C. Virgil、Brian M. Stoltz
DOI:10.1002/chem.201300030
日期:2013.4.2
enaminones! Lactams and imides have been shown to consistently provide enantioselectivities substantially higher than other substrate classes previously investigated in the palladium‐catalyzed asymmetric decarboxylative allylic alkylation. Several new substrates have been designed to probe the contributions of electronic, steric, and stereoelectronic factors that distinguish the lactam/imide series as