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. 02, 2026
Filed:
Jul. 22, 2021
Sichuan University, Chengdu, CN;
Academy of Military Medical Sciences, Beijing, CN;
Yong Qin, Chengdu, CN;
Wu Zhong, Beijing, CN;
Fei Xue, Chengdu, CN;
Minjie Zhang, Chengdu, CN;
Shiyong Fan, Beijing, CN;
Zhibing Zheng, Beijing, CN;
Song Li, Beijing, CN;
SICHUAN UNIVERSITY, Chengdu, CN;
ACADEMY OF MILITARY MEDICAL SCIENCES, Beijing, CN;
Abstract
The present invention relates to the technical field of chemical drug synthesis, and specifically relates to a method for preparing a compound as shown in formula I, comprising: treating the compound as shown in formula VII with an acid to generate the compound as shown in formula I. The method has few synthetic process steps, raw materials which is stable and is easy to prepare, a reaction process which is easy to control, and a high overall yield and purity, and is suitable for industrial preparation.