Abstract: The present disclosure discloses a compound as represented by formula (I) or a pharmaceutically acceptable salt, a solvate or a stereoisomer thereof, that can be represented by the following structure As a selective inhibitor of cyclin-dependent kinase 4/6 (CDK4/6), the compounds of the present disclosure may be used for treating or preventing a disease at least partially modulated by CDK4/6.

Abstract: The present disclosure discloses a compound as represented by formula (I) or a pharmaceutically acceptable salt, a solvate or an isomer thereof, a pharmaceutical composition and a pharmaceutical preparation comprising the same, and the application thereof in the field of medicine. As a selective inhibitor of cyclin-dependent kinase 4/6 (CDK4/6), the compound of the present disclosure may be used for treating or preventing a disease at least partially modulated by CDK4/6, such as breast cancer and colon cancer.

Abstract: The present disclosure relates to 2-arylamino pyridine, pyrimidine, or triazine derivatives, and the preparation method and use thereof. The 2-arylamino pyridine, pyrimidine, or triazine derivatives may act on certain mutated forms of epidermal growth factor receptor, for example the L858R activating mutant, the delE746_A750 mutant, the Exonl9 deletion activating mutant, and the T790M resistance mutant, so as to be used for treatment and prevention of diseases and medical conditions. The 2-arylamino pyridine, pyrimidine, or triazine derivatives may be used for treatment and prevention of cancer. The present disclosure also relates to a pharmaceutical composition comprising 2-arylamino pyridine, pyrimidine, or triazine derivatives, intermediates useful in the manufacture of 2-arylamino pyridine, pyrimidine, or triazine derivatives, and to methods of treatment of diseases mediated by various different forms of EGFR using 2-arylamino pyridine, pyrimidine, or triazine derivatives.

Abstract: The present disclosure relates to 2-arylamino pyridine, pyrimidine, or triazine derivatives, and the preparation method and use thereof. The 2-arylamino pyridine, pyrimidine, or triazine derivatives may act on certain mutated forms of epidermal growth factor receptor, for example the L858R activating mutant, the delE746_A750 mutant, the Exon19 deletion activating mutant, and the T790M resistance mutant, so as to be used for treatment and prevention of diseases and medical conditions. The 2-arylamino pyridine, pyrimidine, or triazine derivatives may be used for treatment and prevention of cancer. The present disclosure also relates to a pharmaceutical composition comprising 2-arylamino pyridine, pyrimidine, or triazine derivatives, intermediates useful in the manufacture of 2-arylamino pyridine, pyrimidine, or triazine derivatives, and to methods of treatment of diseases mediated by various different forms of EGFR using 2-arylamino pyridine, pyrimidine, or triazine derivatives.