title: Cyclo-linopeptide B methanol tris-olvate.
abstract: The title compound, C(56)H(83)N(9)O(9)S·3CH(3)OH, is a methanol tris-olvate of the cyclo-linopeptide cyclo(Met(1)-Leu(2)-Ile(3)-Pro(4)-Pro(5)-Phe(6)-Phe(7)-Val(8)-Ile(9)) (henceforth referred to as CLP-B), which was isolated from flaxseed oil. All the amino acid residues are in an l-configuration based on the CORN rule. The cyclic nona-peptide exhibits eight trans peptide bonds and one cis peptide bond observed between the two proline residues. The conformation is stabilized by an α-turn and two consecutive β-turns each containing a N-H⋯O hydrogen bond between the carbonyl group O atom of the first residue and the amide group H atom of the fourth (α-turn) or the third residue (β-turns), repectively. In the crystal, the components of the structure are linked by N-H⋯O and O-H⋯O hydrogen bonds into chains parallel to the a axis.
authors.forename: Gabriele
authors.initials: G
authors.lastname: Schatte
authors.forename: Shaunivan
authors.initials: S
authors.lastname: Labiuk
authors.forename: Bonnie
authors.initials: B
authors.lastname: Li
authors.forename: Peta-Gaye
authors.initials: PG
authors.lastname: Burnett
authors.forename: Martin
authors.initials: M
authors.lastname: Reaney
authors.forename: Pawel
authors.initials: P
authors.lastname: Grochulski
authors.forename: Michel
authors.initials: M
authors.lastname: Fodje
authors.forename: Jian
authors.initials: J
authors.lastname: Yang
authors.forename: Ramaswami
authors.initials: R
authors.lastname: Sammynaiken