Compounds with ALK inhibitory activity and preparation method and use thereof

A compound shown in formula (I) or a pharmaceutically acceptable salt thereof:

• wherein, R1 is selected from hydrogen, substituted or unsubstituted C1-C4 alkyl, C3-C6 cycloalkyl, substituted or unsubstituted aryl or heterocyclic aryl, and halogen;
• R2 is selected from hydrogen, substituted or unsubstituted C1-C4 alkyl, cyano, and halogen;
• the substituent of C1-C4 alkyl is selected from C3-C6 cycloalkyl, halogen, and cyano;
• R3 is selected from heterocyclic aryl, aryl, and substituted or unsubstituted 5-7 membered heterocycle, wherein the 5-7 membered heterocycle contains 1-3 heteroatoms that are each independently selected from N, P, O, and S;
• R4 and R5 are each independently selected from hydrogen, substituted or unsubstituted saturated C1-C4 alkyl, and substituted or unsubstituted unsaturated C1-C4 alkyl.