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:
Nov. 29, 2011
Filed:
Feb. 07, 2006
Applicants:
Heike Wilhelm, Halle, DE;
Ludger A. Wessjohann, Halle, DE;
Martin Biendl, Elsendorf, DE;
Inventors:
Assignee:
Hopsteiner-Hallertauer Hopfenveredelungsgesellschaft M.B.H., Mainburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 311/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to an efficient method for producing naringenin derivatives from xanthohumol or derivatives thereof. In particular, the method according to the present invention provides the production of isoxanthohumol, for example also in enantiomer-enriched form, from xanthohumol and subsequent demethylation of isoxanthohumol according to specific procedures obtaining corresponding naringenin derivatives, such as, in particular, 8-prenylnaringenin.