Abstract: An aromatic heterocyclic compound, a pharmaceutical composition and use thereof. Specifically disclosed are a compound as shown in formula I, a stereoisomer thereof, a diastereomer thereof, or a pharmaceutically acceptable salt of any one of the foregoing, or a crystal form or solvate of any one of the foregoing. The aromatic heterocyclic compound has a novel structure, good CDK7 inhibitory activity, and good selectivity.

Abstract: An aromatic heterocyclic compound, and a pharmaceutical composition and an application thereof. Specifically disclosed are a compound as represented by formula I-A, a stereoisomer thereof, a diastereoisomer thereof, or a pharmaceutically acceptable salt of any one of the described substances, or a crystalline form or a solvate of any one of the described substances. The aromatic heterocyclic compound is novel in structure, and has good CDK7 inhibitory activity and good selectivity.

Abstract: Provided in the present invention are a novel tricyclic aromatic heterocyclic compound and a preparation method therefor, a pharmaceutical composition and a use thereof. Specifically, provided in the present invention is a compound as shown in formula I below, or an optical isomer, a hydrate, a solvate thereof, or a pharmaceutically acceptable salt thereof. The definitions of each group are as specified in the description. The compound of formula I can be used for treating diseases related to a PD-1/PD-L1 signaling pathway.

Abstract: The present invention provides a novel tricyclic aromatic heterocyclic compound, a preparation method therefor, a pharmaceutical composition and an application thereof. Specifically, the present invention provides a compound as represented by the following formula I, or optical isomers, hydrates, and solvates thereof, or pharmaceutically-acceptable salts thereof. Definitions of groups are as stated in the description. The compound as represented by formula I can be used for treating diseases related to a PD-1/PD-L 1 signal pathway.

Abstract: An aromatic heterocyclic compound having a tricyclic structure and a preparation method therefor and application thereof, and in particular, a compound as shown in formula I, or an optical isomer, a hydrate, a solvate, or a pharmaceutically acceptable salt thereof. The compound shown in formula I may be used to treat diseases associated with a PD-1/PD-L1 signaling pathway.