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:
May. 06, 1997
Filed:
Sep. 06, 1994
Applicant:
Inventors:
Rainer Sobotta, Ingelheim am Rhein, DE;
Franz Dietrich Klinger, Griesheim, DE;
Heinrich Schneider, Ingelheim am Rhein, DE;
Assignee:
Boehringer Ingelheim KG, Ingelheim am Rhein, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07H / ;
U.S. Cl.
CPC ...
536 186 ; 536 184 ; 536 185 ; 536 551 ; 536 63 ;
Abstract
A method of preparing sugar acetonides, such as for example 1,2:5,6-Di-O-isopropylidene-.alpha.-D-glucofuranose, by reacting the corresponding sugar, e.g. D-(+)-glucose, with acetone in the presence of a Lewis acid and a carboxylic acid derivative of general formula ##STR1## wherein X is a leaving group which may be readily replaced by a hydroxyl group.