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. 23, 2010
Filed:
Jul. 26, 2005
Georg Frater, Winterthur, CH;
Urs Mueller, Duebendorf, CH;
Georg Frater, Winterthur, CH;
Urs Mueller, Duebendorf, CH;
Givaudan SA, Vernier, CH;
Abstract
A method of preparing enatiomerically enriched 3a,6,6,9a-tetramethyl-dodecahydro-naphtho[2,1-b]furan, formula (I), from (E,E)-homofarnesic acid or (E)-monocyclohomofarnesic acid by (a) reacting firstly with a chiral alcohol, (b) reacting the product of (a) with an acid to cause a first cyclization, (c) producing an alcohol by reacting the product of (b) with a reducing agent and (d) causing a second cyclization by reacting the product of (c) with an acid. The product of this process gives a mixture of both enantiomers with one in excess.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile