[EN] COMPOUNDS FOR TREATING OR INHIBITING RECURRENCE OF ACUTE MYELOID LEUKEMIA [FR] COMPOSÉS POUR LE TRAITEMENT OU L'INHIBITION DE LA RÉCURRENCE D'UNE LEUCÉMIE MYÉLOÏDE AIGUË
Enantioselective Microbial Reduction of Monoesters of 1,3-Dihydroxypropanone: Synthesis of (<i>S</i>)- and (<i>R</i>)-1,2-<i>O</i>-Isopropylideneglycerol
The reduction of 3-benzoyloxy-1-hydroxypropanone with bakers' yeast proceeds enantioselectively to afford (S)-3-benzoyloxy-1,2-propanediol, which may be further converted into (S)-(benzoyloxymethyl)oxirane. The bioreduction with fermenting yeast of 1-acetoxy-3-benzyloxypropanone gives (R)-1-benzyloxy-3-acetoxy-2-propanol which can be used for the preparation of both (S)- and (R)-1,2-O-isopropylideneglycerol.
Get selective! A selective oxidation of 1,2‐diols to α‐hydroxyketones catalyzed by organotincompounds has been developed (see scheme). Invaluable chemo‐ and stereoselectivity were found in the reaction. The catalytic system has been achieved by electrochemical and chemical oxidation.
[EN] FLUORESCENTLY LABELED MOLECULES CONTAINING MODIFIED TRYPTOPHAN<br/>[FR] MOLÉCULES MARQUÉES PAR FLUORESCENCE CONTENANT DU TRYPTOPHANE MODIFIÉ
申请人:SEED RES AND DEV LLC
公开号:WO2016133913A1
公开(公告)日:2016-08-25
The present disclosure relates to new fluorescent molecules that contain N-alkylated or N-acylated tryptophan and do not substantially quench fluorescent labels attached to the molecules, and the use of such molecules in preparing and studying various compounds, such as substrates and inhibitors for assays of enzymes (e.g., caspases, such as caspase-1 which is an important enzyme in inflammation). An enzyme substrate or enzyme inhibitor that contains a modified tryptophan and fluorescent label as disclosed herein can be studied without loss of signal by Förster quenching. By reducing or eliminating this quenching, more useful labeled molecules with improved properties for assay development can be prepared.
DIASTEREOSELECTION IN A DIRECTED CROSSED ALDOL REACTION BETWEEN TWO POLYOXYGENATED KETONES EMPLOYING TIN(II) ENOLATES. A FACILE STEREOSELECTIVE SYNTHESIS OF ETHYL 2-<i>C</i>-METHYL-DL-LYXOFURANOSIDE
作者:Rodney W. Stevens、Teruaki Mukaiyama
DOI:10.1246/cl.1983.595
日期:1983.4.5
Tin(II) enolates of 1,3-dihydroxy-2-propanone derivatives react with a second ketone, methyl pyruvate, under mild conditions to afford the corresponding anti-crossed aldol products in moderate to excellent yields. Facile elaboration to the branched-chainsugar, ethyl 2-C-methyl-DL-lyxofuranoside, was demonstrated.
1,3-二羟基-2-丙酮衍生物的锡 (II) 烯醇化物与第二种酮丙酮酸甲酯在温和条件下反应,以中等至极好的产率提供相应的抗交叉羟醛产物。证明了对支链糖乙基 2-C-甲基-DL-lyxofuranoside 的简单加工。