Two new phenylpropanoid glycosides (2'-O-acetylplantamajoside and 2'-O, 6"-O-diacetylplantamajoside), a new iridoid glycoside (10-O-(cinnamoyl)-6'-O-(desacetylalpinosidyl)-catalpol), the two known iridoid glycosides globularin and isoscrophularioside, and the known phenylpropanoid glycoside platamajoside were isolated from the methanolic extract of the underground parts of Wulfenia carinthiaca. Structure elucidations were based on high-resolution mass spectrometry and extensive 1-D and 2-D NMR spectroscopy.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1515/znc-2002-11-1202 | DOI Listing |
Chem Biodivers
April 2018
Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI), Center for Chemistry and Biomedicine, University of Innsbruck, Innrain 80-82, Innsbruck, 6020, Austria.
Activity guided isolation of a MeOH extract of the aerial plant parts of Wulfenia carinthiaca Jacq. (Plantaginaceae), using a mushroom tyrosinase assay, resulted in the isolation of five phenylethanoid glucosides and four iridoid glycosides. Two of them, 2'-O-acetylisoplantamajoside and 2',6″-O-diacetylisoplantamajoside, represent new natural products.
View Article and Find Full Text PDFZ Naturforsch C J Biosci
September 2004
Dipartimento di Chimica 'G. Ciamician', Università di Bologna, Via Selmi 2, 1-40126 Bologna, Italy.
Relative antioxidant activities of a methanolic extract of three phenylpropanoid glycosides and three iridoid glycosides from Wulfenia carinthiaca were evaluated using the Briggs-Rauscher (BR) reaction method. This method is based on the inhibitory effects by antioxidants on oscillations of the BR reaction. The total extract showed a certain antioxidant activity with respect to resorcinol chosen as standard.
View Article and Find Full Text PDFZ Naturforsch C J Biosci
April 2003
Institut für Pharmazie, Abteilung Pharmakognosie, Universität Innsbruck, Innrain 52, A-6020 Innsbruck, Austria.
Two new phenylpropanoid glycosides (2'-O-acetylplantamajoside and 2'-O, 6"-O-diacetylplantamajoside), a new iridoid glycoside (10-O-(cinnamoyl)-6'-O-(desacetylalpinosidyl)-catalpol), the two known iridoid glycosides globularin and isoscrophularioside, and the known phenylpropanoid glycoside platamajoside were isolated from the methanolic extract of the underground parts of Wulfenia carinthiaca. Structure elucidations were based on high-resolution mass spectrometry and extensive 1-D and 2-D NMR spectroscopy.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!