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Two new methyl chanofruticosinates from Kopsia flavida blume
Khairana Husain1, Ibrahim Jantan, Ikram M Said
1Department of Pharmacy, Faculty of Allied Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia. khairana@medic.ukm.my
Journal of Asian Natural Products Research
|March 1, 2003
Summary
Researchers discovered two novel indole alkaloids, methyl 3-oxo-12-methoxy-N1-decarbomethoxy-14,15-didehydrochanofruticosinate and methyl 3-oxo-11,12-methylenedioxy-N-decarbomethoxy-14,15-didehydrochanofruticosinate, from Kopsia flavida leaves. These compounds possess the methyl chanofruticosinate skeletal system.
Area of Science:
- Natural Product Chemistry
- Organic Chemistry
- Phytochemistry
Background:
- Kopsia flavida Blume is a plant species known to produce various bioactive compounds.
- Previous research has explored the chemical constituents of Kopsia species, revealing a diverse range of alkaloids.
Purpose of the Study:
- To isolate and characterize new indole alkaloids from the leaves of Kopsia flavida.
- To elucidate the structures of novel compounds using advanced spectroscopic techniques.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation of new indole alkaloids employing Nuclear Magnetic Resonance (NMR) spectroscopy, including 2D-NMR techniques.
Main Results:
- Two new indole alkaloids, methyl 3-oxo-12-methoxy-N1-decarbomethoxy-14,15-didehydrochanofruticosinate and methyl 3-oxo-11,12-methylenedioxy-N-decarbomethoxy-14,15-didehydrochanofruticosinate, were identified.
- Four known indole alkaloids were also isolated and identified from the same plant source.
- The structures of the new compounds were confirmed through comprehensive analysis of NMR spectral data.
Conclusions:
- The study successfully identified novel indole alkaloids from Kopsia flavida, expanding the known chemical diversity of this plant genus.
- The findings contribute to the understanding of the phytochemical profile of Kopsia flavida and provide potential leads for further pharmacological investigations.