✦ LIBER ✦
A novel acylated flavonol glycoside isolated from Brunfelsia grandiflora ssp. grandiflora. Structure elucidation by gradient accelerated NMR spectroscopy at 14T
✍ Scribed by Gerhard Brunner; Ulrich Burger; Pierre Castioni; Ilias Kapetanidis; Philippe Christen
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 70 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0958-0344
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✦ Synopsis
Kaempferol
-3-O-[6 Glc -O-feruloyl]-b-D-glucopyranosyl-(132)-O-[a-L-rhamnopyranosyl-(136)]-b-D-galactopyranoside (1) was isolated from the aerial parts of Brunfelsia grandiflora ssp. grandiflora. The structure of this novel flavonol glycoside was established by fast atom bombardment-mass spectrometry and by means of NMR spectroscopy at 14T, using two-dimensional NMR experiments with pulsed-field gradients for coherence selection. The presence of the constituent aglycones and sugar units of 1 was confirmed independently by acid hydrolysis.