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. 03, 2024
Filed:
Oct. 21, 2019
Applicant:
Industriale Chimica S.r.l, Milan, IT;
Inventors:
Claudio Delfrate, Rho, IT;
Davide Rigamonti, Erba, IT;
Tea Borelli, Como, IT;
Roberto Lenna, S. Giorgio su Legnano, IT;
Assignee:
INDUSTRIALE CHIMICA S.R.L., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J 7/00 (2006.01); C07J 17/00 (2006.01); C07J 33/00 (2006.01);
U.S. Cl.
CPC ...
C07J 7/002 (2013.01); C07J 17/00 (2013.01); C07J 33/002 (2013.01);
Abstract
The present invention relates to a new process for the synthesis of 3α-hydroxy-5α-pregnan-20-one, commonly known as brexanolone, wherein the corresponding cyclic 20-ketal or cyclic 20-thioketal compound of formula (IV) is deprotected with the use or iodine in an organic solvent: (I).