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[Study on glycosidal constituents from Epigynum auritum]
1Laboratory of Phytochemistry, Kunming Institute of Botany, Chinese Academy of Sciences.
Yao Xue Xue Bao = Acta Pharmaceutica Sinica
|January 1, 1991
Summary
Researchers isolated daucosterol and a novel glycoside, epigeoside, from Epigynum auritum rhizomes. Epigeoside
Area of Science:
- Phytochemistry
- Natural Products Chemistry
- Organic Chemistry
Context:
- The Apocynaceae family, particularly the Epigynum genus, is a source of bioactive compounds.
- Rhizomes of Epigynum auritum species are rich in secondary metabolites.
Purpose:
- To isolate and characterize chemical constituents from the rhizomes of Epigynum auritum.
- To elucidate the structure of a novel glycoside and a known compound.
Summary:
- Phytochemical investigation of Epigynum auritum rhizomes led to the isolation of daucosterol and a new glycoside, epigeoside.
- The structure of epigeoside was determined as catechin-3-O-alpha-L-rhamnopyranosyl-(1----4)-beta-D-glucopyranosyl-(1-- --6) -beta-D-glucopyranoside through spectral analysis and chemical reactions.
- Partial and acid hydrolysis confirmed the presence of rhamnose, glucose, and an aglycone identified as catechin.
Impact:
- Identification of novel glycosides from medicinal plants contributes to the understanding of their chemical diversity.
- The isolated compounds may possess potential pharmacological activities, warranting further investigation.