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:
Mar. 28, 1995
Filed:
Jul. 21, 1993
Applicant:
Inventor:
Tuong Huynh-Ba, Pully, CH;
Assignee:
Nestec S.A., Vevey, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549302 ; 562508 ;
Abstract
3- or 4-mono-, 1,3- or 1,4- or even 3,4-disubstituted derivatives of quinic acid are produced by reaction of a hydroxycinnamic acid derivative, of which the phenol group(s) is/are protected with a quinic acid derivative, to form an ester and the different reactivities of the OH functions in the 3 and 4 positions are used to carry out the esterification selectively under low temperature conditions, after which the protective groups are cleaved under controlled acidity and temperature conditions. These conditions avoid any degradation or isomerization. The process enables new quinides to be obtained in high yields.