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. 09, 2017
Filed:
Dec. 31, 2014
Applicant:
Shanghai Haihe Pharmaceutical Co., Ltd., Shanghai, CN;
Assignee:
SHANGHAI HAIHE PHARMACEUTICAL CO., LTD, Shanghai, CN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 491/22 (2006.01);
U.S. Cl.
CPC ...
C07D 491/22 (2013.01);
Abstract
A method for preparing 9-allylcamptothecin derivatives using compound 14 as an essential intermediate. The total yield of the method is high.