Title:
【発明の名称】多相及び抽出膜リアクターにおける立体異性体の分割方法
Document Type and Number:
Japanese Patent JP2677403
Kind Code:
B2
Abstract:
This invention relates to novel methods for facilitating the enzymatic resolution of racemic mixtures of esters, which are derivatized with groups which enhance the esters' aqueous solubility, in an extractive member reactor where the enzyme is placed alternatively either (1) in the aqueous phase, (2) in association with the membrane, or (3) in the aqueous phase and in association with the membrane, wherein the aqueous ester phase is contacted with one side of the membrane, and where an organic extractive phase is contacted with the other side of the membrane, wherein the extractive phase serves to remove the resolving reaction product. Of particular significance regarding this invention is its use of water soluble esters that are derivatized with groups which enhance their aqueous solubility and their reactivity with enzymatic resolving methods which are mediated in an aqueous environment. Novel methods were utilized to prepare these esters, for use in this invention's methods for enzymatically resolving the racemic mixtures of the esters, to produce the separate chiral isomers of the racemic mixture. The importance of the resolution of the separate chiral isomers of the racemic mixtures resides in the isolation of the isomers which frequently have different biological activities.
Inventors:
Matson Stephen El
Application Number:
JP50375688A
Publication Date:
November 17, 1997
Filing Date:
March 31, 1988
Export Citation:
Assignee:
Separacoa Inc.
International Classes:
B01J19/24; C07C219/10; C07C305/04; C07C305/10; C07C309/65; C07C309/66; C07C327/32; C07F9/09; C12M1/40; C12N11/02; C12N11/08; C12P1/00; C12P7/40; C12P7/64; C12P13/06; C12P17/12; C12P41/00; (IPC1-7): C12P41/00
Attorney, Agent or Firm:
Yusuke Hiraki