Isolation of Two Megastigmane-3,9-diol Glucosides from Shiraz Leaves
- 1 November 2000
- journal article
- Published by Taylor & Francis in Journal of Essential Oil Research
- Vol. 12 (6), 653-660
- https://doi.org/10.1080/10412905.2000.9712183
Abstract
The water soluble methanol extract from Shiraz leaves, was passed through a XAD 2 column, and elution with methanol yielded a crude glycoconjugate composite. Further separation of this polar fraction using IIPLC semi preparative Cm18 column followed by acetylation and flash chromatography yielded Alangioside J and a new norisoprenoid β-glucopyranoside. Using 1II- and 13C-NMR techniques, the latter was shown to be the C-9 conjugate of the same (3S, 5R, 6S,9R)-megastigmane-3,9-diol as the C-3 conjugated former one.Keywords
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