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:
Jun. 21, 2022
Filed:
Dec. 25, 2018
Zhejiang Huahai Pharmaceutical Co., Ltd., Linhai, CN;
Shanghai Syncores Technologies, Inc, Shanghai, CN;
Hu Su, Shanghai, CN;
Xiaowen Guo, Shanghai, CN;
Yukun Liang, Shanghai, CN;
Kaiqiang Shi, Shanghai, CN;
Jintao Yang, Shanghai, CN;
Kang He, Shanghai, CN;
Anping Tao, Shanghai, CN;
Luning Huang, Shanghai, CN;
Jianguo An, Shanghai, CN;
Xi Chen, Shanghai, CN;
Hong Gu, Shanghai, CN;
ZHEJIANG HUAHAI PHARMACEUTICAL CO., LTD., Linhai, CN;
SHANGHAI SYNCORES TECHNOLOGIES, INC, Shanghai, CN;
Abstract
The present invention relates to a method for preparing an intermediate (Formula IV) of sodium elagolix. The intermediate is prepared by the following route. The method has advantages of simple and safe operation, high yield, less environmental pollution, good economic effect and suitability for industrial production, wherein R represents C1-C4 substituted or unsubstituted benzyl or allyl.