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:
Sep. 26, 2006
Filed:
Jul. 15, 2004
Applicants:
Bruno Gabetta, Milan, IT;
Gianfranco Zini, Milan, IT;
Inventors:
Bruno Gabetta, Milan, IT;
Gianfranco Zini, Milan, IT;
Assignee:
Indena, S.p.A., Milan, IL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 305/00 (2006.01); C07D 407/00 (2006.01); C07D 493/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods for obtaining paclitaxel from plants containing paclitaxel are disclosed. Plant material is first obtained from plants containing paclitaxel. Paclitaxel is then extracted from the plant material. Subsequently, paclitaxel is separated from the paclitaxel extract using a series of column chromatography separation steps to obtain at least one fraction containing paclitaxel. The paclitaxel in a fraction that is obtained from the final chromatography step is crystallized. Using these methods, high purity paclitaxel may be efficiently obtained from plants containing paclitaxel.