Patent ID: 11945817
Assignee: KIND PHARMACEUTICAL
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 4:
5. The compound of Formula I, or an isotopically labeled compound thereof, or an optical isomer thereof, a geometric isomer thereof, a tautomer thereof or a mixture of various isomers, or a pharmaceutically acceptable salt thereof, or a prodrug thereof according to claim 1, wherein R3 is selected from the group consisting of C1-C6 acyclic alkyl, C6-C14 aryl, C3-C8 cycloalkyl, C1-C6 acyclic alkyl —O—, and heteroaryl having 5 to 14 ring members; wherein the above C1-C6 acyclic alkyl, C6-C14 aryl, C3-C8 cycloalkyl, C1-C6 acyclic alkyl-O—, heteroaryl having 5 to 14 ring members and amino are optionally substituted by 1 to 3 substituents, wherein the substituents are independently selected from the group consisting of hydroxyl, halogen, cyano, amino, carboxyl, C6-C14 aryl and C1-C6 acyclic alkyl.