Oxidations of Dihydroxyalkanoates to Vicinal Tricarbonyl Compounds with a 4-BzoTEMPO-Sodium Bromite System or by Indirect Electrolysis Using 4-BzoTEMPO and Bromide Ion
A thermoregulated phase-separable chiral Pt nanocatalyst for recyclable asymmetric hydrogenation of α-ketoesters
作者:Xiuru Xue、Yanhua Wang、Fu-She Han
DOI:10.1039/c7cc00892a
日期:——
Asymmetric hydrogenation of α-ketoesters catalyzed by a recyclable chiral Pt nanocatalyst system possessing thermoregulated phase-separation property is presented.
α-酮酸酯的不对称氢化反应由可回收的手性铂纳米催化剂系统催化,具有热调节相分离性能。
α-Regioselective Aqueous Mukaiyama Aldol Reaction of 2-(Trimethylsilyloxy)furan with Pyruvates
A procedure that enables access to α-(hydroxyalkyl)butenolides from 2-(trimethylsilyloxy)furan and keto esters with excellent regiocontrol is reported. Despite their synthetic significance, there is a general lack of catalytic methodology for the α-regioselective Mukaiyama-type aldol reaction of O-silylated dienolates. We demonstrate that the challenging competition between the α and γ positions of
Substances and Pharmaceutical Compositions for the Inhibition of Glyoxalases and Their Use As Anti-Fungal Agents
申请人:Huse Klaus
公开号:US20080300303A1
公开(公告)日:2008-12-04
The present invention pertains to substances of the formula (I) wherein X is O or S; and R1-R4 are defined in the claims as inhibitors of glyoxalase I and/or II, pharmaceutical compositions comprising one or more compounds according to formula (I) and the use of one or more compounds according to formula (I) for the treatment of diseases associated with increased glycolytic metabolism. In one embodiment, the disease is a fungal infection.
A method for making an acetal compound is disclosed, comprising the steps of: (a) adding a carbonyl compound, an alcohol, and a dehydrating agent to an environment wherein the carbonyl compound is selected from the group consisting of an aldehyde, a ketone, and mixtures thereof; and (b) pressurizing the mixture of step (a), wherein the pressurization causes the carbonyl compound and the alcohol to react and form the acetal compound.
The present disclosure relates to novel cocrystals and novel methods for cocrystallization. In particular, the disclosure includes cocrystals comprising a salt of an active agent, such as a chloride salt of an active pharmaceutical ingredient. The present disclosure also relates to methods of preparing cocrystals and methods for screening for solid state phases.