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. 31, 2016
Filed:
Oct. 09, 2012
Applicant:
Zach System, Avrille, FR;
Inventors:
Yvon Derrien, La Meignanne, FR;
Patricia Poirier, Saint Clement de la Place, FR;
Massimiliano Forcato, Rovolon, IT;
Tony Pintus, Saint Jean de Linieres, FR;
Livius Cotarca, Cervignano Del Friuli, IT;
Sebastien Meunier, Feneu, FR;
Laurence Graindorge, Angers, FR;
Assignee:
ZACH SYSTEM, Avrille, FR;
Primary Examiner:
Int. Cl.
CPC ...
C07J 1/00 (2006.01); C07J 43/00 (2006.01); C07J 31/00 (2006.01);
U.S. Cl.
CPC ...
C07J 43/003 (2013.01); C07J 1/0059 (2013.01); C07J 31/003 (2013.01); C07J 31/006 (2013.01);
Abstract
The present invention relates to a process for the preparation of 17-substituted steroids and, more particularly, to an improved method of synthesizing abiraterone or derivatives thereof in high yield and purity by means of a key 3-formate intermediate.