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A new pyranoxanthone from Garcinia nervosa
Ka Woong Wong1, Gwendoline Cheng Lian Ee1, Intan Safinar Ismail1,2
1a Faculty of Science, Department of Chemistry , Universiti Putra Malaysia , Serdang , Malaysia.
Natural Product Research
|April 18, 2017
Summary
Researchers discovered a new pyranoxanthone, garner xanthone, and five known compounds from Garcinia nervosa stem bark. The plant extracts were evaluated for antimicrobial properties.
Area of Science:
- Phytochemistry
- Natural Product Chemistry
- Pharmacognosy
Background:
- Garcinia species are a rich source of bioactive compounds.
- Xanthones are a significant class of natural products with diverse biological activities.
- Garcinia nervosa is traditionally used, necessitating phytochemical investigation.
Purpose of the Study:
- To isolate and characterize phytochemicals from the stem bark of Garcinia nervosa.
- To evaluate the antimicrobial potential of the crude extracts.
Main Methods:
- Phytochemical investigation using spectroscopic techniques (NMR, MS).
- Isolation of compounds from plant extracts.
- Antimicrobial activity screening of crude extracts.
Main Results:
- One new pyranoxanthone derivative, garner xanthone (1), was identified.
- Five known compounds were isolated: 1,5-dihydroxyxanthone (2), 6-deoxyisojacareubin (3), 12b-hydroxy-des-D-garcigerrin A (4), stigmasterol (5), and β-sitosterol (6).
- The structures were confirmed using NMR and MS data.
Conclusions:
- Garcinia nervosa stem bark is a source of novel and known xanthone derivatives.
- Further studies are warranted to explore the biological activities of isolated compounds.
- The plant extracts showed antimicrobial activity, suggesting potential therapeutic applications.