O=C1CCC(N2CC3C(NCCCCCCNC(=O)c4ccncc4NC(=O)Cc4cccc(Cl)c4)=CC=CC3C2=O)C(=O)N1
O=C1CCC(N2CC3C(NCCOCCOCCNC(=O)c4ccncc4NC(=O)Cc4cccc(Cl)c4)=CC=CC3C2=O)C(=O)N1
O=C1CCC(N2CC3C(NCCCCCC(=O)Nc4cncc(NC(=O)Cc5cccc(Cl)c5)c4)=CC=CC3C2=O)C(=O)N1
O=C1CCC(N2CC3C(NCCOCOCCC(=O)Nc4cncc(NC(=O)Cc5cccc(Cl)c5)c4)=CC=CC3C2=O)C(=O)N1
O=C1CCC(N2CC3C(NCCOCCC(=O)Nc4cncc(NC(=O)Cc5cccc(Cl)c5)c4)=CC=CC3C2=O)C(=O)N1
O=C1CCC(N2C(=O)C3C=CC=C(NCCCCCCNC(=O)c4ccncc4NC(=O)Cc4cccc(Cl)c4)C3C2=O)C(=O)N1
O=C1CCC(N2C(=O)C3C=CC=C(NCCOCCOCCNC(=O)c4ccncc4NC(=O)Cc4cccc(Cl)c4)C3C2=O)C(=O)N1
O=C1CCC(N2C(=O)C3C=CC=C(NCCCCCC(=O)Nc4cncc(NC(=O)Cc5cccc(Cl)c5)c4)C3C2=O)C(=O)N1
O=C1CCC(N2C(=O)C3C=CC=C(NCCOCOCCC(=O)Nc4cncc(NC(=O)Cc5cccc(Cl)c5)c4)C3C2=O)C(=O)N1
O=C1CCC(N2C(=O)C3C=CC=C(NCCOCCC(=O)Nc4cncc(NC(=O)Cc5cccc(Cl)c5)c4)C3C2=O)C(=O)N1
O=C1CCC(N2C(=O)C3C=CC=C(NCOCCOCCOc4ccc5c(NC(=O)C6CCOc7ccc(Cl)cc76)cncc5c4)C3C2=O)C(=O)N1
O=C1CCC(N2CC3C(NCOCCOCCOc4ccc5c(NC(=O)C6CCOc7ccc(Cl)cc76)cncc5c4)=CC=CC3C2=O)C(=O)N1
O=C1CCC(N2C(=O)C3C=CC=C(NCOCCOc4ccc5c(NC(=O)C6CCOc7ccc(Cl)cc76)cncc5c4)C3C2=O)C(=O)N1
O=C1CCC(N2CC3C=CC=C(NCOCCOc4ccc5c(NC(=O)C6CCOc7ccc(Cl)cc76)cncc5c4)C3C2=O)C(=O)N1
O=C1CCC(N2C(=O)C3C=CC=C(NC(=O)CCC(=O)Nc4ccc5c(NC(=O)C6CCOc7ccc(Cl)cc76)cncc5c4)C3C2=O)C(=O)N1
O=C1CCC(N2CC3C=CC=C(NC(=O)CCC(=O)Nc4ccc5c(NC(=O)C6CCOc7ccc(Cl)cc76)cncc5c4)C3C2=O)C(=O)N1
COc1ccccc1OCCNC(=O)c1cc(=O)[nH]c2cccc(OCCOCNC3=CC=CC4CN(C5CCC(=O)NC5=O)C(=O)C34)c12
COc1ccccc1OCCNC(=O)c1cc(=O)[nH]c2cccc(OCCOCNC3=CC=CC4C(=O)N(C5CCC(=O)NC5=O)C(=O)C34)c12
COc1ccccc1OCCNC(=O)c1cc(=O)[nH]c2cccc(OCCCC(=O)NC3=CC=CC4C(=O)N(C5CCC(=O)NC5=O)C(=O)C34)c12
COc1ccccc1OCCNC(=O)c1cc(=O)[nH]c2cccc(OCCCC(=O)NC3=CC=CC4CN(C5CCC(=O)NC5=O)C(=O)C34)c12
COc1ccccc1OCCNC(=O)c1cc(=O)[nH]c2cccc(OCCOCCOC3=CC=CC4CN(C5CCC(=O)NC5=O)C(=O)C34)c12
COc1ccccc1OCCNC(=O)c1cc(=O)[nH]c2cccc(OCCOCCOC3=CC=CC4C(=O)N(C5CCC(=O)NC5=O)C(=O)C34)c12
COc1ccccc1OCCNC(=O)c1cc(=O)[nH]c2cccc(OCCOCCOCCOC3=CC=CC4C(=O)N(C5CCC(=O)NC5=O)CC34)c12
COc1ccccc1OCCNC(=O)c1cc(=O)[nH]c2cccc(OCCOCCOCCNC3=CC=CC4C(=O)N(C5CCC(=O)NC5=O)CC34)c12
CC(C)(C)c1ccc(N(C(=O)c2ccco2)[C@H](C(=O)NCCCOCCOCCNc2cccc3c2CN(C2CCC(=O)NC2=O)C3=O)c2cccnc2)cc1
CC(C)(C)c1ccc(N(C(=O)c2ccco2)[C@H](C(=O)NCCOCCOCCNc2cccc3c2CN(C2CCC(=O)NC2=O)C3=O)c2cccnc2)cc1
CC(C)(C)c1ccc(N(C(=O)c2ccco2)C(C(=O)NCC(=O)NCCCCCNc2cccc3c2CN(C2CCC(=O)NC2=O)C3=O)c2cccnc2)cc1
C=CC(=O)N(c1ccc(C(C)(C)C)cc1)[C@H](C(=O)NCCCOCCOCCNc1cccc2c1CN(C1CCC(=O)NC1=O)C2=O)c1cccnc1
C=CC(=O)N(c1ccc(C(C)(C)C)cc1)C(C(=O)NCC(=O)NCCCCCNc1cccc2c1CN(C1CCC(=O)NC1=O)C2=O)c1cccnc1
C=CC(=O)N(c1ccc(C(C)(C)C)cc1)[C@H](C(=O)NCCOCCOCCNc1cccc2c1CN(C1CCC(=O)NC1=O)C2=O)c1cccnc1
Conjugation of Mpro inhibitors to ligands that recruit the CRL4 CRBN ligase complex with the aim of producing compounds that can both inhibit protease activity and induce protein degradation. Linkers would require significant optimisation and combining with selective covalent inhibitors could be effective.
See https://doi.org/10.1038/s41467-019-11429-w for an example of a small molecule degrader of a viral protease.