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:
Feb. 03, 2026
Filed:
Jan. 15, 2021
Applicants:
Shanghai Haiyan Pharmaceutical Technology Co., Ltd., Shanghai, CN;
Yangtze River Pharmaceutical Group Co., Ltd., Jiangsu, CN;
Inventors:
Assignees:
SHANGHAI HAIYAN PHARMACEUTICAL TECHNOLOGY CO., LTD., Shanghai, CN;
YANGTZE RIVER PHARMACEUTICAL GROUP CO., LTD., Jiangsu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 31/352 (2006.01); C07D 311/96 (2006.01); C07D 487/04 (2006.01);
U.S. Cl.
CPC ...
C07D 487/04 (2013.01);
Abstract
Disclosed are an optically pure oxaspiro-substituted pyrrolopyrazole derivative, a preparation method therefor and the pharmaceutical use thereof. The compounds are compounds as shown in formula (I) and formula (II) or a pharmaceutically acceptable salt thereof, or a solvate thereof, or a prodrug thereof. Also disclosed are a preparation method therefor and the use thereof.