A large-scale synthesis of enantiomerically pure γ-hydroxy-organochalcogenides
摘要:
Enantiomerically pure (R)- and (S)-gamma-hydroxy-organochalcogenides are prepared using poly-[R]-3-hydroxybutanoate (PHB) as the starting material. (C) 2009 Elsevier Ltd. All rights reserved.
Photo-biocatalytic One-Pot Cascades for the Enantioselective Synthesis of 1,3-Mercaptoalkanol Volatile Sulfur Compounds
作者:Kate Lauder、Anita Toscani、Yuyin Qi、Jesmine Lim、Simon J. Charnock、Krupa Korah、Daniele Castagnolo
DOI:10.1002/anie.201802135
日期:2018.5.14
The synthesis of enantiomerically pure 1,3‐mercaptoalkanol volatile sulfur compounds through a one‐pot photo‐biocatalytic cascade reaction is described. Two new KRED biocatalysts with opposite enantioselectivity were discovered and proved to be efficient on a wide range of substrates. The one‐pot cascade reaction combining photocatalytic thio‐Michael addition with biocatalytic ketoreduction in an aqueous
small molecule designed by in silicoscreening as a dipeptide mimic of Trp184 and Met185 in the interaction site, was synthesized and its significant anti-HIV-1 activity was confirmed. Structure activity relationship (SAR) studies of its derivatives were performed and provided results that are expected to be useful in the future design and development of novel anti-HIV agents targeting CA.
Photo-Biocatalytic Cascades for the Synthesis of Volatile Sulfur Compounds and Chemical Building Blocks
作者:Daniele Castagnolo、Kate Lauder
DOI:10.1055/s-0039-1690784
日期:2020.5
catalysis that exploits enzymes to perform highly stereoselective chemical transformations under mild and sustainable conditions. This Synpact highlights how biocatalysis can be used in the synthesis of chiral 1,3-mercaptoalkanols, an important class of compounds responsible for the flavours and aromas of many foods and beverages. The identification of two ketoreductase (KRED) enzymes able to reduce prochiral
Biocatalytic Preparation of (<i>R</i>)-(−)-4-(Phenylthio)-2-butanol and (<i>R</i>)-(−)-4-(Phenylsulfonyl)-2-butanol by the Sequential Use of<i>Pichia farinosa and Rhodococcus rhodochrous</i>
作者:Takeshi Sugai、Yoshikazu Ohtsuka、Hiromichi Ohta
DOI:10.1246/cl.1996.233
日期:1996.3
Preparation of (R)-4-(phenylthio)-2-butanol and (R)-4-(phenylsulfonyl)-2-butanol has been established based on the sequential use of two biocatalysts. A Pichia farinosa IAM 4682 mediated reduction of 4-(phenylthio)-2-butanone afforded (R)-4-(phenylthio)-2-butanol (91%e.e.) in 90% yield. Contaminating (S)-enantiomer in the resulting product was selectively oxidized by Rhodococcus rhodochrous IFO15564 to leave pure (R)-enantiomer in 87% yield. From this product, highly enantiomerically pure (R)-4-(phenylsulfonyl)-2-butanol was obtained by hydrogen peroxide oxidation.