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Cytotoxic xanthones from Cudrania tricuspidata
Byong Won Lee1, Sang Wan Gal, Ki-Min Park
1Department of Agricultural Chemistry, Division of Applied Life Science (BK21 program), The Research Institute of Natural Science, Gyeongsang National University, RAIRC, Jinju 660-701, Korea.
Journal of Natural Products
|March 25, 2005
Summary
Researchers discovered a new isoprenylated tetrahydroxyxanthone from Cudrania tricuspidata root bark. This compound, along with two others, was fully characterized using advanced spectroscopic and crystallographic methods.
Area of Science:
- Natural Products Chemistry
- Phytochemistry
- Organic Chemistry
Background:
- Cudrania tricuspidata is a plant species known for its bioactive compounds.
- Xanthones are a class of organic compounds with diverse biological activities.
- Isoprenylated compounds often exhibit unique pharmacological properties.
Purpose of the Study:
- To isolate and characterize new xanthone derivatives from Cudrania tricuspidata.
- To elucidate the chemical structures of isolated compounds using spectroscopic and crystallographic techniques.
Main Methods:
- Isolation of compounds from the root bark of Cudrania tricuspidata.
- Structure elucidation using Nuclear Magnetic Resonance (NMR) spectroscopy.
- Confirmation of structures through X-ray crystallographic analysis.
Main Results:
- Isolation and identification of a novel isoprenylated tetrahydroxyxanthone, designated compound 1 (2,3,6,8-tetrahydroxy-1-(3-methylbut-2-enyl)-5-(2-methylbut-3-en-2-yl)-9H-xanthen-9-one).
- Co-isolation of known compounds macluraxanthone B (2) and cudraxanthone L (3).
- Full characterization of all isolated compounds confirming their structures.
Conclusions:
- The root bark of Cudrania tricuspidata is a source of novel isoprenylated xanthone derivatives.
- The identified compounds contribute to the known chemical diversity of the Cudrania genus.
- Advanced analytical techniques are crucial for the precise characterization of natural products.