The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 1992
Filed:
Aug. 13, 1990
Applicant:
Inventor:
Charles J Sih, Madison, WI (US);
Assignee:
Suntory Limited, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P / ;
U.S. Cl.
CPC ...
435280 ; 435130 ;
Abstract
A process for preparing optically active 1-substituted-3-hydroxybutane or its derivatives of formula (II) or (III) ##STR1## comprising treating an ester derivative of racemic 1-substituted-3-hydroxybutane of formula (I), ##STR2## wherein R.sub.1 is chloromethyl group or methyl group and R.sub.2 is p-toluenesulfonyloxy group or phenylthio group, provided that when R.sub.1 is methyl group R.sub.2 is not p-toluenesulfonyloxy group, with a lipase derived from the genus Pseudomonas.