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:
Jan. 12, 2016
Filed:
Apr. 15, 2011
Zhonghao Zhuo, Shanghai, CN;
Zhijun Tang, Shanghai, CN;
Tianhui Xu, Shanghai, CN;
Ming LI, Shanghai, CN;
Xiaoming Ji, Shanghai, CN;
Xiaoliang Gao, Shanghai, CN;
Zhonghao Zhuo, Shanghai, CN;
Zhijun Tang, Shanghai, CN;
Tianhui Xu, Shanghai, CN;
Ming Li, Shanghai, CN;
Xiaoming Ji, Shanghai, CN;
Xiaoliang Gao, Shanghai, CN;
SHANGHAI TECHWELL BIOPHARMACEUTICAL CO., LTD., Shanghai, CN;
Abstract
A purification method of the compound represented by formula 1 is provided, which includes the following steps: (1) loading crude compound 1 on macroporous adsorbent resin, (2) washing the macroporous adsorbent resin with an aqueous solution, an organic solvent or a mixture solution of organic solvent and water, (3) eluting with an aqueous solution, an organic solvent or a mixture solution of organic solvent and water. The purified compound represented by formula 1 is obtained.