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. 18, 2021
Filed:
Feb. 26, 2020
Applicant:
National Taiwan Normal University, Taipei, TW;
Inventors:
Hsyueh-Liang Wu, Taipei, TW;
Ping Yu Wu, Zhubei, TW;
Jin-Fong Syu, New Taipei, TW;
Julian P. Henschke, Uraidla, AU;
Assignee:
NATIONAL TAIWAN NORMAL UNIVERSITY, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 209/48 (2006.01);
U.S. Cl.
CPC ...
C07D 209/48 (2013.01);
Abstract
The present invention discloses a method for preparation of Apremilast. β-phthalimino vinylsulfones are reacted through the asymmetric addition reaction to form an addition product, and the drug of Apremilast can be obtained from the addition product through simple reactions. The method is a process for synthesizing Apremilast in a more efficient way.