Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Quinones from Chirita eburnea.

Xiang-Hai Cai¹, Xiao-Dong Luo, Jun Zhou

¹State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China.

Journal of Natural Products

|June 1, 2005

Summary

This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Inhibition of farnesyltransferase reduces angiogenesis by interrupting endothelial cell migration.

Biochemical pharmacology·2012

Same author

Electroacupuncture prevents ovariectomy-induced osteoporosis in rats: a randomised controlled trial.

Acupuncture in medicine : journal of the British Medical Acupuncture Society·2012

Same author

Novel thermogelling dispersions of polymer nanoparticles for controlled protein release.

Nanomedicine : nanotechnology, biology, and medicine·2012

Same author

Block copolymer-based gadolinium nanoparticles as MRI contrast agents with high T1 relaxivity.

Nanomedicine (London, England)·2012

Same author

c-Met, epidermal growth factor receptor, and insulin-like growth factor-1 receptor are important for growth in uveal melanoma and independently contribute to migration and metastatic potential.

Melanoma research·2012

Same author

An epigenetic role for PRL-3 as a regulator of H3K9 methylation in colorectal cancer.

Gut·2012

Same journal

Correction to "Structure and Absolute Configuration of Diterpenoids from <i>Hymenaea stigonocarpa</i>".

Journal of natural products·2026

Same journal

Goyangamins A-C, Three Pairs of Enantiomeric 2(1<i>H</i>)-Quinolinone Alkaloid Dimers with Antisenescent Activity from <i>Tetradium daniellii</i>.

Journal of natural products·2026

Same journal

Polycyclic-Fused Cytochalasins with Anti-Liver Fibrosis Activity Produced by the Endophytic Fungus <i>Trichoderma harzianum</i>.

Journal of natural products·2026

Same journal

Oleraciamides A and B: Confirmation and Revision of Structures.

Journal of natural products·2026

Same journal

Synthesis and Stereochemical Revision of Violaceoid E, a Polyoxygenated Cyclohexanoid Natural Product Isolated from <i>Aspergillus violaceofuscus</i> Gasperini.

Journal of natural products·2026

Same journal

Cpumycins A-C, Aminated Benzoic Dimers from <i>Streptomyces</i> sp. CPU-W6, and Their Potential Cardioprotective Activities.

Journal of natural products·2026

See all related articles

Researchers isolated five new quinone derivatives from Chirita eburnea. Some compounds and extracts demonstrated significant free radical scavenging activity, indicating potential antioxidant properties.

Area of Science:

Natural Product Chemistry
Medicinal Chemistry
Pharmacognosy

Background:

Chirita eburnea is a plant species with potential medicinal properties.
Quinone derivatives are known for diverse biological activities.

Purpose of the Study:

To isolate and characterize new quinone derivatives from Chirita eburnea.
To evaluate the antioxidant activity of isolated compounds and extracts.

Main Methods:

Isolation of compounds using chromatographic techniques.
Structure elucidation via Nuclear Magnetic Resonance (NMR), Mass Spectrometry (MS), Ultraviolet (UV), and Infrared (IR) spectroscopy.
Evaluation of free radical scavenging activity using the DPPH assay.

Main Results:

Related Experiment Videos

Five new quinone derivatives ((R)-7-hydroxy-alpha-dunnione, (R)-8-hydroxy-alpha-dunnione, (R)-7,8-dihydroxy-alpha-dunnione, (R)-7-methoxy-6,8-dihydroxy-alpha-dunnione, and 1,7-dihydroxy-2-hydroxymethylanthraquinone) were identified.
Seven known compounds were also isolated.
The EtOAc fraction and compounds (R)-7,8-dihydroxy-alpha-dunnione and (R)-7-methoxy-6,8-dihydroxy-alpha-dunnione exhibited notable DPPH free radical scavenging activity.

Conclusions:

Chirita eburnea is a source of novel quinone derivatives.
The identified compounds and extracts possess antioxidant potential, warranting further investigation for therapeutic applications.