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US 12,110,282 B2Granted
Thiobenzopyrans and their use in preparation of drugs for treatment of rheumatoid arthritis
AssigneeHc Synthetic Pharmaceutical Co., Ltd.
InventorsCheng Yang, Dongxing Li, Sumin Qi, Qiyuan Zhang, Xiaodan Zhao
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Abstract
Provided is a thiobenzopyran-based compound of Formula I and its pharmaceutically acceptable salt, and its use in the preparation of drugs for the treatment of rheumatoid arthritis, wherein X is selected from oxygen, sulfur, —SO—, and —SO2—; Y is a sulfur atom and Z is H, Na, or K. Through preliminary tests of anti-inflammatory activity, compounds of formula I have anti-rheumatoid arthritis effects.
Claims6
A thiobenzopyran-based compound of Formula I or their pharmaceutically acceptable salts,
- wherein X was selected from —SO—, and —SO2—;
- Y is a sulfur atom;
- and
- Z is H, Na, or K.
1 more element
Dependencies are inferred from the claim text.