Efficient Enantioselective Reduction of Ketones with <i>Daucus carota</i> Root
作者:J. S. Yadav、S. Nanda、P. Thirupathi Reddy、A. Bhaskar Rao
DOI:10.1021/jo010399p
日期:2002.5.1
active alcohols are the potential chiral building blocks for the synthesis of pharmaceutically important molecules and asymmetricchiral ligands. Hence, this biocatalytic approach is found to be the most suitable for the preparation of a wide range of chiralalcohols and gave inspiration for the development of a new biotechnological process.
Enzymatic process for the preparation of optically active alcohols from ketones using tuberous root Daucus carota
申请人:Council of Scientific and Industrial Research
公开号:US07056540B2
公开(公告)日:2006-06-06
The present invention relates to an enzymatic process for the preparation of optically active chiral alcohols using tuberous root Daucus carota; particularly invention relates to an enzymatic process for the preparation of optically active alcohols by enantioselective reduction of corresponding ketones using tuberous root Daucus carota.
Sigillin A, a Unique Polychlorinated Arthropod Deterrent from the Snow Flea<i>Ceratophysella sigillata</i>
作者:Witali Schmidt、Thies M. Schulze、Gregor Brasse、Edyta Nagrodzka、Michael Maczka、Jürg Zettel、Peter G. Jones、Jörg Grunenberg、Monika Hilker、Ute Trauer-Kizilelma、Ute Braun、Stefan Schulz
DOI:10.1002/anie.201501719
日期:2015.6.22
The snow flea Ceratophysella sigillata, a winter‐active species of springtail, produces uniquepolychlorinated octahydroisocoumarins to repel predators. The structure of the major compound, sigillin A, was elucidated through isolation, spectroscopic analysis, and X‐ray crystallography. Sigillin A showed high repellent activity in a bioassay with predatory ants. A promising approach for the total synthesis
Enantioselective bioreduction of ethyl 4,4,4-trihalide-3-oxobutanoate by Kluyveromyces marxianus
作者:Simone Santos de Sousa Oliveira、Luiza Rosária Sousa Dias、Natane Cezario Barbosa、Murilo L. Bello、Fábio Júnior Moreira Novaes、Maria da Conceição Klaus V. Ramos、Francisco Radler de Aquino Neto、Sorele Batista Fiaux
DOI:10.1016/j.tetlet.2013.03.116
日期:2013.6
Resting cells of Kluyveromyces marxianus were used in the bioreduction of ethyl 4,4,4-trifluoro-3-oxobutanoate and ethyl 4,4,4-trichloro-3-oxobutanoate with 81% and 4% yields and 29% and 73% enantiomeric excess, respectively. The differences observed were attributed to the tri-halide structures. (C) 2013 Published by Elsevier Ltd.