Method for Preparing (S)-3-Hydroxy-Gamma-Butyrolactone Using Hydrolase
申请人:Park Oh-Jin
公开号:US20090104669A1
公开(公告)日:2009-04-23
The present invention relates to a method for preparing S-HGB ((S)-3-hydroxy-γ-butyrolactone) using hydrolase, and more particularly to a method for preparing S-HGB in a high purity by hydrolyzing S-BBL ((S)-β-benzoyloxy-γ-butyrolactone) in the presence of hydrolase. According to the present invention, the S-HGB having an optical purity can be obtained in a high yield under simple process conditions without requiring reaction conditions of high pressure and high temperature or complex operating conditions by hydrolyzing S-BBL with hydrolase.
[EN] METHOD FOR PREPARING (S)-3-HYDROXY-GAMMA-BUTYROLACTONE USING HYDROLASE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE (S)-3-HYDROXY-GAMMA-BUTYROLACTONE UTILISANT UNE HYDROLASE
申请人:LG CHEMICAL LTD
公开号:WO2007100227A1
公开(公告)日:2007-09-07
[EN] The present invention relates to a method for preparing S-HGB ((S)-3-hydroxy-?-butyrolactone) using hydrolase, and more particularly to a method for preparing S-HGB in a high purity by hydrolyzing S-BBL ((S)-ß-benzoyloxy-?-butyrolactone) in the presence of hydrolase. According to the present invention, the S-HGB having an optical purity can be obtained in a high yield under simple process conditions without requiring reaction conditions of high pressure and high temperature or complex operation conditions by hydrolyzing S-BBL with hydrolase. [FR] L'invention concerne un procédé de préparation de S-HGB ((S)-3-hydroxy-?-butyrolactone) utilisant une hydrolase, et plus particulièrement un procédé de préparation de S-HGB de grande pureté par l'hydrolyse de S-BBL ((S-ß-benzoyloxy-?-butyrolactone) en présence d'une hydrolase. L'invention permet de produire à haut rendement de la S-HGB de pureté optique dans des conditions de traitement simples, sans conditions réactionnelles de pression et de température élevées ni conditions d'intervention complexes, par l'hydrolyse de S-BBL à l'aide d'une hydrolase.
Beta-substituted-gamma-butyrolactones and a process for preparation thereof
申请人:Uh, Hong-Sun
公开号:EP1398312A1
公开(公告)日:2004-03-17
The present invention is related to a process for the preparation of (S)- or (R)-β-substituted-γ-butyrolactones or a racemic mixture thereof. β-substituted-γ-succinic anhydrides are converted by zinc borohydride in a compatible solvent selected from tetrahydrofuran, methylene chloride, and ethyl acetate to the corresponding β-substituted-γ-butyrolactones. The β-substituted-γ-butyrolactones obtainable in chrystallin form are useful in the production of pharmaceuticals, agrochemicals, flavors and fragrances. Also disclosed are novel β-substituted-γ-butyrolactones.