Asymmetric reduction of 3-oxo-octadecanoic acid with fermenting baker's yeast. An easy synthesis of optically pure (+)-(2R,3R)-corynomycolic acid
作者:Masanori Utaka、Hiroshi Higashi、Akira Takeda
DOI:10.1039/c39870001368
日期:——
Optically pure (+)-corynomycolic acid has been synthesised from methyl acetoacetate by a route including asymmetricreduction of 3-oxo-octadecanoic acid with baker'syeast as a key step.
Corynomycolic acid-containing glycolipids signal through the pattern recognition receptor Mincle
作者:Phillip L. van der Peet、Christian Gunawan、Shota Torigoe、Sho Yamasaki、Spencer J. Williams
DOI:10.1039/c5cc00085h
日期:——
Glucose monocorynomycolate is revealed to signal through both mouse and human Mincle. Glycerol monocorynomycolate is shown to selectively signal through human Mincle, with the activity residing predominantly in the 2′S-isomer.
Diastereo- and enantioselective preparation of β-alkylhomoallylic alcohols
作者:Yuichi Kobayashi、Yasunori Kitano、Yoshiyuki Takeda、Fumie Sato
DOI:10.1016/s0040-4020(01)90583-6
日期:1986.1
A new and efficient method for the preparation of four possible stereoisomers of β-alkylhomoallylic alcohols 1 has been developed which is based on the diastereoselective addition of nucleophiles to opticallyactive α-alkyl-β-trimethylsilyl-β,γ-unsaturated carbonyl compounds. The utility of this reaction is demonstrated by the synthesis of naturally occurring serricornin and corynomycolic acid.
Acyclic stereoselection using 1,2-asymmetric induction. The first total synthesis of (+)-corynomycolic acid
作者:Yasunori Kitano、Yuichi Kobayashi、Fumie Sato
DOI:10.1039/c39850000498
日期:——
The first total synthesis of (+)-corynomycolic acid (1), which includes as the key step, diastereoselective reduction of the optically active carbonyl compounds (8) is described.
A General Method for the Synthesis of Both Enantiomers of Optically Pure β-Hydroxy Esters from (<i>S</i>)-(<i>p</i>-Chlorophenylsulfinyl)acetone Easily Obtainable by Kinetic Resolution with Bakers’ Yeast
作者:Tamotsu Fujisawa、Atsushi Fujimura、Toshio Sato
DOI:10.1246/bcsj.61.1273
日期:1988.4
enantiomers of various optically pure (R)- and (S)-β-hydroxy esters were generally synthesized from (S)-(p-chlorophenylsulfinyl)acetone obtained by kinetic resolution with bakers’ yeast, followed by γ-alkylation, diastereoselective reduction, subsequent introduction of ester group and reductive elimination of the sulfinyl group. The key step of the diastereoselective reduction of (S)-β-keto sulfoxides was performed