2 x
PP6:
METHYL[CYCLO-7[(2R)-((N-VALYL)AMINO)-2-(HYDROXYL-(1S)-1-METHYLOXYCARBONYL-2-PHENYLETHOXY)PHOSPHINYLOXY-ETHYL]-1-NAPHTHALENEACETAMIDE](Non-covalent)
Ding, J. et al., Macrocyclic Inhibitors of Penicillopepsin. II. X-Ray Crystallographic Analyses of Penicillopepsin Complexed with a P3-P1 Macrocyclic Peptidyl Inhibitor and with its Two Acyclic Analogues. J.Am.Chem.Soc. (1998)