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:
Aug. 21, 2018
Filed:
Apr. 02, 2013
Applicant:
Zhejiang Hisun Pharmaceutical Co., Ltd., Taizhou, CN;
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H 17/08 (2006.01); C07H 1/00 (2006.01);
U.S. Cl.
CPC ...
C07H 1/00 (2013.01); C07H 17/08 (2013.01);
Abstract
Provided in the present invention are novel key intermediates of selamectin and the preparation method thereof. Also provided is a new synthesis process, using doramectin as a starting material, and obtaining selamectin via hydrogenation, oxidation, oximation and desugaring. The new process of the present invention has few steps, and is simple to operate, high in yield, low in cost and causes little pollution, and is more suitable for large scale industrial production.