title: Dodecyl α-L-rhamnopyranosyl-(1→2)-β-D-fucopyranoside derivatives from the glandular trichome exudate of Erodium pelargoniflorum.
abstract: Chemical investigation of the glandular trichome exudate of Erodium pelargoniflorum (Geraniaceae) led to the isolation of two dodecyl disaccharide derivatives, named pelargoside A1 and pelargoside B1 (1 and 2, resp.). The structures of 1 and 2 were determined as dodecyl 4-O-acetyl-α-L-rhamnopyranosyl-(1→2)-4-O-acetyl-β-D-fucopyranoside and dodecyl 3,4-di-O-acetyl-α-L-rhamnopyranosyl-(1→2)-4-O-acetyl-β-D-fucopyranoside, respectively, by spectroscopic studies, including 2D-NMR, and chemical transformations. In addition, undecyl, tridecyl, and tetradecyl homologs of 1 and 2, named pelargosides A2-A4 and pelargosides B2-B4, were also characterized as minor constituents of the exudate.
authors.affiliation: Department of Chemistry and Materials Science, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan.
authors.forename: Takaomi
authors.initials: T
authors.lastname: Sakai
authors.forename: Yuhei
authors.initials: Y
authors.lastname: Tanemura
authors.forename: Satsuki
authors.initials: S
authors.lastname: Itoh
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Fujimoto
mesh_terms: D004187:Disaccharides / Q000737:chemistry* / Q000302:isolation & purification; D035264:Flowers / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D031314:Geraniaceae / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D064201:Trichomes / Q000737:chemistry
chemical_list: D004187:Disaccharides