title: An efficient and highly stereocontrolled route to bulgecinine hydrochloride.
abstract: (-)-Bulgecinine is a nonproteinogenic amino acid component present in bulgecins A, B, and C, antibiotic glycopeptides derived from Pseudomonas acidophila and Pseudomonas mesoacidophila. In combination with beta-lactam antibiotics, bulgecins exihibit a unique synergistic antibacterial activity against various Gram-negative microorganisms. Utilizing d-serine as a chiral template and employing a highly regio- and stereoselective intramolecular amidomercuration-oxidation protocol in the key pyrrolidine ring forming step, an efficient total synthetic route to enantiopure bulgecinine is reported herein.
authors.affiliation: Department of Medicinal Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045, USA.
authors.forename: Juhienah K
authors.initials: JK
authors.lastname: Khalaf
authors.forename: Apurba
authors.initials: A
authors.lastname: Datta
mesh_terms: D018360:Crystallography, X-Ray; D006020:Glycopeptides / Q000138:chemical synthesis* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D006020:Glycopeptides; C036713:bulgecin