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A new dammarane-type triterpene glycoside from Polyscias fulva
E Bedir1, N J Toyang, I A Khan
1National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, and Departments of Pharmacognosy and Pharmacology, School of Pharmacy, University of Mississippi, University, Mississippi 38677, USA.
Journal of Natural Products
|February 15, 2001
Summary
Researchers isolated a new dammarane-type triterpene glycoside, polysciasoside A, from Polyscias fulva leaves. Its chemical structure was determined, adding to the known compounds from this plant species.
Area of Science:
- Natural Product Chemistry
- Phytochemistry
- Organic Chemistry
Background:
- Polyscias fulva is a plant species known for its potential bioactive compounds.
- Triterpene glycosides represent a significant class of natural products with diverse pharmacological activities.
- Isolation and structural elucidation of novel compounds contribute to understanding plant chemical diversity.
Purpose of the Study:
- To isolate and characterize chemical constituents from the leaves of Polyscias fulva.
- To identify and determine the structure of a new dammarane-type triterpene glycoside.
- To contribute to the phytochemical knowledge of the Polyscias genus.
Main Methods:
- Extraction of compounds from Polyscias fulva leaves.
- Chromatographic techniques (e.g., column chromatography) for isolation.
- Spectroscopic methods (e.g., NMR, MS) for structural elucidation.
Main Results:
- Isolation of four compounds, including one new dammarane-type triterpene glycoside, named polysciasoside A.
- Determination of the chemical structure of polysciasoside A as 12-oxo-3beta,16beta,20(S)-trihydroxydammar-24-ene-3-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranoside.
- Identification of three known compounds co-occurring in the plant extract.
Conclusions:
- The leaves of Polyscias fulva contain a novel dammarane-type triterpene glycoside, polysciasoside A.
- The structural elucidation provides valuable data for further investigation of its potential biological activities.
- This study expands the repertoire of known natural products derived from the Polyscias genus.