The peptide (Z)‐Pro–Leuol

The structure of the synthetic protected dipeptide (Z)-Pro–Leuol [systematic name: benzyl 2-(1-hydroxy­methyl-3-methyl­butyl­amino­carbonyl)­pyrrolidine-1-carboxyl­ate], C19H28N2O4, was determined by X-ray crystallography. The peptide adopts a novel backbone conformation compared with other longer oligopeptides containing Pro–Leuol.