Chemistry and Biochemistry
The structure of the title peptide, C25H27N3O5, has been determined and its conformation analysed. Values of the standard peptide torsion angles are φ(1) = -44.2 (3)°, ψ(1) = 135.9 (2)°, φ(2) = -141.6 (2)° and ψ(T/2) = 168.0 (2)°. The crystal structure is stabilized by an intermolecular hydrogen bond, with an N···O distance of 2.919 (3)Å, which is formed between screw-axis-related NH and CO groups of dehydrovaline residues.
Acta Crystallographica Section C: Crystal Structure Communications
Singh, T. P.
(2001). Design of Peptides With, α,β-Dehydro-Residues: A Dipeptide With a Branched β-Carbon Dehydro-Residue at the (i+1) Position, Methyl N-(benzyloxycarbonyl)-α,β-Didehydrovalyl-L-Tryptophanate. Acta Crystallographica Section C: Crystal Structure Communications, 57(10), 1220-1221.
Available at: https://aquila.usm.edu/fac_pubs/7546