CCOC(=O)[C@H](CCc1ccccc1)N[C@@H](C)C(=O)N1CCC[C@H]1C(=O)O
CCC(=O)OC(OP(=O)(CCCCc1ccccc1)CC(=O)N1C[C@H](C2CCCCC2)C[C@H]1C(=O)O)C(C)C
C=C(C)C(OC(=O)CC)OP(=O)(CCCCc1ccccc1)CC(=O)N1C[C@H](C2CCCCC2)C[C@H]1C(=O)O
C[C@H](N[C@@H](CCc1ccccc1)C(=O)OCS)C(=O)N1CCC[C@H]1C(=O)O
There are a study (Friedman and Gordon, 1989) where enalapril was used as inhibitor of ACE and also was studied as possible cure for dog coronavirus. In base of enalapril and fosinopril two other compounds were designed with small changes. On was the addition of a double bound and one with a sulfur atom. These two were designed based in the PDB coordinates 4APH, 6LZG and 3KBH.