title: Two Unusual Methylidenecyclopropane Glucosides fromMetaxya rostrataC.Presl.
abstract: Two new natural compounds, (1R,2E)-2-(6-hydroxyhexylidene)cyclopropyl-β-D-glucopyranoside (1) and (6E)-6-[(2R)-2-(β-D-glucopyranosyloxy)cyclopropylidene]hexanoic acid (2), glucosides of a very rare methylidenecyclopropane alcohol, as well as two known glycosides of phenolic acids, namely 4-O-β-D-glucopyranosylcaffeic acid (3) and (E)-4-O-β-D-glucopyranosylcoumaric acid (4), and methylα-fructofuranoside (5) were isolated for the first time from the rhizomes of the tree fernMetaxya rostrataC.Presl. The structures were elucidated on the basis of detailed spectroscopic data analysis, and the structure of 1 was additionally confirmed by X-ray crystal-structure analysis.
authors: Department of Pharmacognosy, University of Vienna Althanstr. 14, AT-1090 Vienna.
authors: Kerstin P
authors: KP
authors: Kainz
authors: Judith
authors: J
authors: Virtbauer
authors: Hanspeter
authors: H
authors: Kählig
authors: Vladimir
authors: V
authors: Arion
authors: Oliver
authors: O
authors: Donath
authors: Gottfried
authors: G
authors: Reznicek
authors: Werner
authors: W
authors: Huber
authors: Brigitte
authors: B
authors: Marian
authors: Liselotte
authors: L
authors: Krenn
keywords: Cyclopropanes, methylidene-; Glycosides; Metaxya rostrata; X-Ray crystallography