Aromatic ring-lactam compound, preparation method therefor and use thereof

A compound represented by formula (I) or a pharmaceutically acceptable salt thereof,

• in the formula,
• R1 is independently selected from substituted 3 to 8 membered cycloalkyl, unsubstituted 3- to 8-membered heterocycloalkyl and substituted 5-to 10-membered heteroaryl;
• the substituent is independently selected from halogen, hydroxyl or C1-C8 alkyl;
• R2a and R2b are independently hydrogen;
• R3a and R3b are independently selected from hydrogen and unsubstituted C1-C6 alkyl;
• R4a and R4b are independently selected from hydrogen and substituted or unsubstituted C1-C6 alkyl;
• the substituent is independently selected from hydroxyl and amino;
• Ar is selected from any one of the following substituted or unsubstituted groups:
• 5-to 10- membered aryl or 5-to 10-membered heteroaryl;
• the substituent is independently selected from one or more than one halogen, C1-C6 alkyl, deuterated C1-C6 alkoxy, C1-C6 alkoxy, C1-C6 alkylamino;
• M is selected from N or CR5;
• R5 is halogen;
• M1 and M2 are each independently selected from N and CR6;
• R6 is independently selected from hydrogen, halogen and C1-C6 alkyl;
• X and Y are each CH;
• wherein, the heteroaryl contains 1 to 3 heteroatoms selected from the following group:
• N and O, and the heterocycloalkyl contains 1 to 3 heteroatoms selected from following group:
• N and O, each ring system is independently saturated or unsaturated monocyclic ring.