Patent ID: 11939307
Assignee: INSTITUTE OF MEDICINAL BIOTECHNOLOGY, CHINESE ACADEMY OF MEDICAL SCIENCES
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A | IPC C

Claim 4:
5. The compound or the pharmaceutically acceptable salt thereof as claimed in claim 4, wherein R5, R4 together with the nitrogen atom to which they are bonded form, , wherein n=1 or 2, R13 is alkyl containing 1-4 carbons or cycloalkyl containing 3 to 5 carbons, and the alkyl containing 1-4 carbon is methyl or ethyl;
or R5, R4 together with the nitrogen atom to which they are bonded form, , wherein n=1 or 2, R14 and R15 are alkyl groups containing 1 to 4 carbons;
or R5, R4 together with the nitrogen atom to which they are bonded form, , wherein R16 is a diC1-C4 alkylamino group, pyrrolidinyl;
or R5, R4 together with the nitrogen atom to which they are bonded form, , R16 is a diC1-C4 alkylamino.