title: Structures and conformation of a benzo-12-crown-4 containing dipeptide.
abstract: Crystal structures of the dipeptide Boc-12-Crown-4-L-DOPA-Gly-OMe (chi) and Boc-12-Crown-4-D/L-DOPA-Gly-OMe (rac) were solved by single crystal X-ray diffraction. Analysis of the packing differences in the crystal reveals that the presence of a water molecule in chi enables intermolecular contacts with the solvent that result in a different conformation of the dipeptide backbone itself. An uncommon N-H…N interaction stabilizes the peptide in its solid state.
authors: Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, India, 208016.
authors: Garima
authors: G
authors: Tripathi
authors: Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, India, 208016.
authors: Gurunath
authors: G
authors: Ramanathan
mesh_terms: D004151:Dipeptides / Q000138:chemical synthesis* / Q000737:chemistry*; D017433:Protein Structure, Secondary
chemical_list: D004151:Dipeptides
keywords: N-H…N interaction; benzo-12-crown-4 crown ethers; crown ether containing peptides