Abstract: Disclosed are a derivative of a 2,5-diketopiperazine compound, and a preparation method therefor, a pharmaceutical composition thereof and the use thereof. Specifically, disclosed are a compound as represented by formula (I), a stereoisomer thereof, a tautomer thereof or a pharmaceutically acceptable salt thereof, or a solvate of any one of the aforementioned. The compound is new in terms of structure, and has good anti-tumor activity and water solubility.

Abstract: An electronic device is provided. A lateral fingerprint recognition apparatus is in contact with a function button. An accommodating structure is arranged in the lateral fingerprint recognition apparatus. A stopping assembly is arranged on a side of a fingerprint hole close to the function button. Inserting a partial area of the stopping assembly into the accommodating structure enables the lateral fingerprint recognition apparatus, when pressed, to move in movement space of the accommodating structure on the side of the fingerprint hole close to the function button, so as to limit a displacement amount of the lateral fingerprint recognition apparatus within a specific range, implementing the functions of the lateral fingerprint recognition apparatus and of the function button, and preventing the lateral fingerprint recognition apparatus from being displaced from the originally designed position.

Abstract: This application relates to the field of electronic device technologies, and in particular, to an electronic device. The electronic device includes a housing, a camera module, and a decorative part. The housing is provided with a mounting hole. The camera module includes a lens and a module body connected to the lens. The decorative part includes a decorative part body and a skirt structure connected to the decorative part body. The decorative part body is disposed on the periphery of the lens and disposed in the mounting hole. The skirt structure is provided with a notch. The notch is opposite to the module body. An orthographic projection of a part of the module body opposite to the notch onto a plane of the skirt structure does not fall into the skirt structure.

Abstract: An electronic device is provided. A lateral fingerprint recognition apparatus is in contact with a function button. An accommodating structure is arranged in the lateral fingerprint recognition apparatus. A stopping assembly is arranged on a side of a fingerprint hole close to the function button. Inserting a partial area of the stopping assembly into the accommodating structure enables the lateral fingerprint recognition apparatus, when pressed, to move in movement space of the accommodating structure on the side of the fingerprint hole close to the function button, so as to limit a displacement amount of the lateral fingerprint recognition apparatus within a specific range, implementing the functions of the lateral fingerprint recognition apparatus and of the function button, and preventing the lateral fingerprint recognition apparatus from being displaced from the originally designed position.