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. 17, 2021
Filed:
May. 09, 2017
Zhejiang Huahai Pharmaceutical Co., Ltd., Zhejiang, CN;
Shanghai Aobo Pharmtech, Inc., Ltd., Shanghai, CN;
Jicheng Zhang, Shanghai, CN;
Zeng Li, Shanghai, CN;
Luning Huang, Shanghai, CN;
Qian Chen, Shanghai, CN;
Anping Tao, Shanghai, CN;
Hong Gu, Shanghai, CN;
SHANGHAI AOBO PHARMTECH, INC., LTD., Shanghai, CN;
ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD., Zhejiang, CN;
Abstract
Provided are a fosaprepitant phosphate intermediate (IV) preparation method, a fosaprepitant phosphate intermediate (IV-A) and a method of (AA) for preparing fosaprepitant dimeglumine by using the intermediate (IV-A). IV: Rand Rare independently selected from C1-C7 alkyl groups or benzyl groups; IV-A: Rand Rare independently selected from C1-C7 alkyl groups, and Rand Rare not both benzyl groups.