Oleananesaponins from Gymnema sylvestre

By using combined chromatographic methods, four oleananesaponins, namely, 3β‐O‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyloleanolic acid 28‐O‐β‐D‐glucopyranosyl ester (1), gymnemoside‐W1 (2), 3β‐O‐β‐D‐xylopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl oleanolic acid 28‐O‐β‐D‐gluco...

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Bibliographic Details
Published in:Vietnam journal of chemistry 2019-02, Vol.57 (1), p.39-45
Main Authors: Yen, Duong Thi Hai, Van Toan, Nguyen, Tai, Bui Huu, Yen, Pham Hai, Nhiem, Nguyen Xuan, Van Kiem, Phan
Format: Article
Language:English
Subjects:
gymemagenin
Gymnema sylvestre
oleananesaponin
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Summary:By using combined chromatographic methods, four oleananesaponins, namely, 3β‐O‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyloleanolic acid 28‐O‐β‐D‐glucopyranosyl ester (1), gymnemoside‐W1 (2), 3β‐O‐β‐D‐xylopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl‐(1 → 6)‐β‐D‐glucopyranosyl oleanolic acid 28‐O‐β‐D‐glucopyranosyl ester (3), and alternoside XIX (4) were isolated from the methanol extract of the leaves of Gymnema sylvestre (Retz.) R.Br. ex Schult. Their structures were identified on the basis of spectroscopic evidence and in comparison with those reported in the literature.
ISSN:0866-7144
2572-8288
2572-8288
DOI:10.1002/vjch.201960006