C[C@@H]1CS/C(=N\NC(=O)C(=O)[C@@H](NC(=O)C2CCCCCC2)C2CCOCC2)N1C
CC(C)[C@H](NC(=O)OCc1ccccc1)C(=O)NC(C=O)Cc1ccccc1
CC(C)C[C@H](NC(=O)OCc1ccccc1)C(=O)N[C@H](C(=O)NCC(=O)C=[N+]=[N-])C(C)C
CC[C@H](NC(=O)[C@H](CS(=O)(=O)CC1CC1)N[C@@H](c1ccc(F)cc1)C(F)(F)F)C(=O)C(=O)NC1CC1
These were the 4 protease inhibitor compounds found to be potentially interesting in https://www.biorxiv.org/content/10.1101/2020.04.16.044016v1
No fragments were used in this design