title: Synthetic studies toward labionin, a new α,α-disubstituted amino acid from type III lantibiotic labyrinthopeptin A2.
abstract: The labyrinthopeptins are a new class of lantibiotics containing two identical quaternary α,α-disubstituted amino acids, named labionin (Lab). The synthetic formation of this unique structural feature represents the key step in the total synthesis of these polycyclic peptides. In this report we describe the synthesis of an orthogonally protected α,α-disubstituted amino acid building block serving as labionin precursor for the future assembly of labyrinthopeptin A2 and of other labyrinthopeptin derivatives.
authors.affiliation: Technische Universität Berlin, Institut für Chemie, Straße des 17. Juni 124, 10623 Berlin, Germany.
authors.forename: Georg M
authors.initials: GM
authors.lastname: Sambeth
authors.forename: Roderich D
authors.initials: RD
authors.lastname: Süssmuth
mesh_terms: D001430:Bacteriocins / Q000737:chemistry*; D003545:Cysteine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D013237:Stereoisomerism; D013440:Sulfides / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D001430:Bacteriocins; D013440:Sulfides; C550284:labyrinthopeptin A2; D003545:Cysteine