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:
Dec. 29, 2015
Filed:
Feb. 03, 2005
Applicants:
Hirotaka Kashiwagi, Gotenba, JP;
Yoshiyuki Ono, Gotenba, JP;
Inventors:
Hirotaka Kashiwagi, Gotenba, JP;
Yoshiyuki Ono, Gotenba, JP;
Assignee:
CHUGAI SEIYAKU KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 31/59 (2006.01); C07C 401/00 (2006.01); C07F 7/18 (2006.01);
U.S. Cl.
CPC ...
C07C 401/00 (2013.01); C07F 7/1892 (2013.01);
Abstract
An object of the present invention is to provide a process for synthesizing a vitamin D compound by simple procedures at lower costs. The present invention provides a process for preparing a vitamin D compound and an intermediate thereof, comprising the step of: (a) mixing a ketone or aldehyde, a Wittig reagent, and a base; or (b) mixing a ketone or aldehyde and a Wittig reagent, and then adding a base to the resulting mixture.
Kashiwagi, Hirotaka. (2015). Process for the synthesis of vitamin d compounds and intermediates for the synthesis of the compounds (U.S. Patent No. 9221753). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9221753
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile