title: An ellagitannin, n-butyl gallate, two aryltetralin lignans, and an unprecedented diterpene ester from Pelargonium reniforme.
abstract: The structural diversity of the metabolic pool of Pelargonium reniforme was extended by the characterization of the 1C4-glucose based ellagitannin pelargoniin E, gallic acid n-butyl ester, (-)-4,4',9'-trihydroxy-3',5'-dimethoxy-2,7'-cyclolignan 9-O-beta-glucopyranoside and reniformin, a diterpene ester comprised of a diterpene acid with an uncommon -(CH2)(2)- bridging element linked to 2-(4-hydroxyphenyl)ethansulfonic acid. These metabolites were associated with the known (alpha,beta)-3,4-di-O-galloyl-glucopyranoside, 4,6-dihydroxy-2beta-glucopyranosyloxyacetophenone, 1-O-galloylglycerol, 6'-O-galloylsalidroside and (+)-isolariciresinol-9'-O-beta-glucopyranoside. All structures were established on the basis of spectroscopic methods.
authors.affiliation: Freie Universität Berlin, Institute of Pharmacy, Pharmaceutical Biology, Königin-Luise-Str. 2+4, D-14195 Berlin, Germany.
authors.forename: Klaus Peter
authors.initials: KP
authors.lastname: Latté
authors.forename: Maki
authors.initials: M
authors.lastname: Kaloga
authors.forename: Andreas
authors.initials: A
authors.lastname: Schäfer
authors.forename: Herbert
authors.initials: H
authors.lastname: Kolodziej
mesh_terms: D002247:Carbon Isotopes; D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D004952:Esters / Q000737:chemistry* / Q000302:isolation & purification; D005707:Gallic Acid / Q000031:analogs & derivatives* / Q000737:chemistry* / Q000302:isolation & purification; D047348:Hydrolyzable Tannins / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D008968:Molecular Conformation; D031316:Pelargonium / Q000737:chemistry* / Q000378:metabolism; D012015:Reference Standards; D013237:Stereoisomerism
chemical_list: D002247:Carbon Isotopes; D004224:Diterpenes; D004952:Esters; D047348:Hydrolyzable Tannins; D005707:Gallic Acid