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New Cycloartane and Flavonol Glycosides from Corchorus depressus

✍ Scribed by Muhammad Zahid; Akbar Ali; Omar Ishurd; Amir Ahmed; Zulfiqar Ali; Viqar Uddin Ahmad; Yuanjiang Pan

Publisher
John Wiley and Sons
Year
2002
Tongue
German
Weight
105 KB
Volume
85
Category
Article
ISSN
0018-019X

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✦ Synopsis

Two new monodesmosidic cycloartane triterpene glycosides, depressosides E and F, and two new flavonol glycosides, depressonol A and B, were isolated from the butanol-soluble part of the EtOH extract of Corchorus depressus l. The structures of the new compounds were elucidated as (22R,24S)-22,25-epoxy-9,19-cyclolanostane-3b,16b,24-triol 3-[a-l-rhamnopyranosyl-(1 3 4)-b-d-glucopyranoside] (1), (22R,24S)-22,25-epoxy-9,19-cyclolanostane-3b,16b,24-triol 3-[a-d-glucopyranosyl-(1 3 3)-b-d-glucopyranoside] (2), kaempferol 3-[bd-glucopyranosyl-(1 3 4)-b-d-galactopyranoside] 7-[a-l-arabinofuranoside] (4), and kaempferol 3-[b-d-glucopyranosyl-(1 3 6)-b-d-galactopyranoside] 7-[a-l-arabinofuranoside] (5) on the basis of chemical evidence and detailed spectroscopic studies.

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✍ Viqar Uddin Ahmad; Akbar Ali; Zulfiqar Ali; Farah Naz Zafar; Muhammad Zahid 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 26 KB 👁 1 views

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