Patent ID: 11945798
Assignee: YUHAN CORPORATION
Field: Organic fine chemistry (Chemistry)
Classification: CPC A  C | IPC C

Claim 2:
3. The compound of claim 1, or a pharmaceutically acceptable salt thereof, wherein R1 is —C(O)—C1-6 alkyl, optionally substituted by one or more substituents selected from the group consisting of halogen, —NHC1-6 alkyl, —N(C1-6 alkyl)2, and 4-7 membered heterocyclyl; —C(O)—C3-6 cycloalkyl, optionally substituted by one or more substituents selected from the group consisting of OH and halogen; or —C(O)NHC1-3 alkyl optionally substituted by one to three substituents selected from the group consisting of OH, F and Cl.