Patent ID: 11905274
Assignee: BEIJING TIDE PHARMACEUTICAL CO., LTD.
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  A | IPC C

Claim 4:
5. The compound according to claim 1, or a pharmaceutically acceptable salt, ester, stereoisomer, polymorph, solvate, N-oxide, isotopically labeled compound, or prodrug thereof, wherein, when the structure of formula (b) is formed, R1a and R1b are each independently selected from the group consisting of, or when the structure of formula (a) is formed, R2a and R2b are each independently selected from the group consisting of:
C1-6 alkyl;
C2-6 alkenyl;
C2-6 alkynyl;
C3-7 cyclic hydrocarbyl group;
5- to 7-membered monocyclic heterocyclic group;
8- to 10-membered benzo-fused heterocyclic group;
phenyl;
5- to 6-membered heteroaryl;
—C1-6 alkylene-C6-10 aryl; and
—C1-6 alkylene-(5- to 14-membered heteroaryl); and
the above alkyl, alkylene, alkynyl, cyclic hydrocarbyl group, heterocyclic group, aryl and heteroaryl, at each occurrence, are each optionally substituted by 1, 2 or 3 R13; and
R13 is as defined in claim 1.