[DE] VERFAHREN ZUR HERSTELLUNG OPTISCH AKTIVER 3-ALKYLCARBONSÄUREN UND DEREN ZWISCHENPRODUKTE [EN] METHOD FOR THE PRODUCTION OF OPTICALLY ACTIVE 3-ALKYL CARBOXYLIC ACIDS AND THE INTERMEDIATE PRODUCTS THEREOF [FR] PROCEDE POUR PRODUIRE DES ACIDES 3-ALKYLCARBOXYLIQUES OPTIQUEMENT ACTIFS ET LEURS PRODUITS INTERMEDIAIRES
Anaerobic growth of the bacterium strain HxN1 with n‐hexane gives nearly equal amounts of (2R,1′R)‐ and (2S,1′R)‐(1‐methylpentyl)succinate, which are formed by the radical addition of the hydrocarbon to fumarate (see scheme). The highly selective attack on the pro‐S hydrogen atom at C2 of n‐hexane is associated with inversion of the configuration at C2 during binding to fumarate and exhibits isotopic
PREPARATION OF BETA-AMINO ACIDS HAVING AFFINITY FOR THE ALPHA-2-DELTA PROTEIN
申请人:Conway Brian G
公开号:US20090247743A1
公开(公告)日:2009-10-01
Disclosed are materials and methods for preparing optically active β-amino acids of Formula 1,
which bind to the alpha-2-delta (α2δ) subunit of a calcium channel.
本发明涉及制备配方1的光学活性β-氨基酸的材料和方法,该配方1结合到钙通道的α2δ亚单位。
Method For Producing Alcohol and Carboxylic Acid Having Optical Activity
申请人:Dekishima Yasumasa
公开号:US20080233621A1
公开(公告)日:2008-09-25
It is an object of the present invention to provide an inexpensive and efficient industrial method for obtaining (S)-2-pentanol, (S)-2-hexanol, 1-methylalkyl malonic acid and 3-methyl carboxylic acid at a high optical purity. The present invention provides a method of producing (S)-2-pentanol or (S)-2-hexanol which comprises allowing certain types of microorganisms or transformed cells, a product obtained by treating said microorganisms or cells, a culture solution of said microorganisms or cells, and/or a crude purified product or purified product of a carbonyl reductase fraction obtained from said microorganisms or cells, to act on 2-pentanone or 2-hexanone.
Method for the production of optically active 3-alkylcarboxylic acids and the intermediate products thereof
申请人:Wacker Chemie AG
公开号:US07534908B2
公开(公告)日:2009-05-19
An enantioselective method for producing optically active 3-alkyl carboxylic acids comprises transforming an optically active secondary alcohol into an optically active, activated compound by introducing a leaving group; reacting the activated compound with a malonic acid derivative to obtain an optically active, alkylated malonic acid compound, the reaction taking place exclusively in ether and/or carboxylic acid ester solvents and one or more aprotic polar solvents or alcohols as a cosolvent in a maximum proportion of 30 volume percent of total solvent, wherein the added cosolvent is not hexamethyl phosphoric acid triamide; the malonic acid compound is hydrolyzed if necessary to obtain the corresponding acid; and the corresponding acid is decarboxylated.
PROCESS FOR PRODUCING OPTICALLY ACTIVE ALCOHOL AND CARBOXYLIC ACID
申请人:API Corporation
公开号:EP1712630A1
公开(公告)日:2006-10-18
It is an object of the present invention to provide an inexpensive and efficient industrial method for obtaining (S)-2-pentanol, (S)-2-hexanol, 1-methylalkyl malonic acid and 3-methyl carboxylic acid at a high optical purity. The present invention provides a method of producing (S)-2-pentanol or (S)-2-hexanol which comprises allowing certain types of microorganisms or transformed cells, a product obtained by treating said microorganisms or cells, a culture solution of said microorganisms or cells, and/or a crude purified product or purified product of a carbonyl reductase fraction obtained from said microorganisms or cells, to act on 2-pentanone or 2-hexanone.