Abstract: Disclosed are an SOS1 degrading agent and a preparation method therefor and use thereof. Specifically, disclosed is a compound of formula I: S-L-E(I), wherein L is a linking chain, which links S and E by means of covalent bonds; E is a small molecule ligand of an E3 ubiquitin ligase complex; and S is the structure shown in S7. The compound of formula I of the present invention can degrade and/or inhibit SOS1 protein in cells, and can be used for the treatment and/or prevention of an SOS1-mediated disease or disorder, or a disease or disorder caused by the interaction of SOS1 with Ras or SOS1 with Rac.

Abstract: Disclosed are an SOS1 degrading agent and a preparation method therefor and use thereof. Specifically, disclosed is a compound of formula I: S-L-E (I), wherein L is a linking chain, which links S and E by means of covalent bonds; E is a small molecule ligand of an E3 ubiquitin ligase complex. The compound of formula I of the present invention can degrade and/or inhibit SOS1 protein in cells, and can be used for the treatment and/or prevention of an SOS1-mediated disease or disorder, or a disease or disorder caused by the interaction of SOS1 with Ras or SOS1 with Rac.

Abstract: A compound represented by formula I are provided. The stereoisomer, racemate, tautomer, isotopic label, prodrug or a pharmaceutically acceptable salt of the compound, and a pharmaceutical composition containing the compound, a preparation method, and medical use of the compound are further provided. The structure is as shown in formula I.