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, 1998
Filed:
May. 21, 1996
Daiso Co., Ltd., Osaka, JP;
Abstract
A novel method for preparing optically active chlorohydrin compound and optically active 1,2-diol compound and/or optically active 3-hydroxy-.gamma.-butyrolactone which are useful as intermediates for preparing medicaments, agricultural chemicals, physiologically active substances and ferroelectric liquid crystals, which comprises treating a racemic chlorohydrin compound having the formula: ##STR1## wherein R.sup.1 is H or lower alkyl group; and R.sup.2 is substituted or unsubstituted lower alkyl group when R.sup.1 is H; or R.sup.2 is H when R.sup.1 is lower alkyl group with a microorganism, whereby selectively degrading only one of optical isomers thereof, and recovering the remaining an other optically active chlorohydrin and isolating optically active 1,2-diol compound and/or optically active 3-hydroxy-.gamma.-butyrolactone converted by the reaction.