Related Experiment Video
Updated: Jun 5, 2026
12:00
Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro
Published on: July 5, 2017
Bioactive flavonoids from the black locust tree, robinia pseudoacacia
Pharmaceutical Biology
|January 11, 2011
Summary
Five flavonoids were isolated from the black locust plant (Robinia pseudoacacia), with acacetin showing significant cytotoxicity against prostate cancer cells (PC-3). This study also corrected previous NMR assignments for several compounds.
Area of Science:
- Phytochemistry
- Natural Products Chemistry
- Pharmacology
Background:
- Robinia pseudoacacia (Fabaceae) is a plant species with potential medicinal properties.
- Flavonoids are a class of plant secondary metabolites known for diverse biological activities.
- Previous research on Robinia pseudoacacia may have incomplete or inaccurate data regarding its chemical constituents.
Purpose of the Study:
- To isolate and identify flavonoid compounds from the ethanolic extract of Robinia pseudoacacia.
- To evaluate the bioactivity of isolated compounds using the brine shrimp lethality test (BST).
- To assess the cytotoxic effects of isolated compounds against a panel of human tumor cell lines, including prostate cancer.
Main Methods:
- Fractionation of the ethanolic extract guided by the brine shrimp lethality test (BST).
- Structure elucidation of isolated compounds using spectral analyses (e.g., 13C NMR).
- Determination of cytotoxic activity against six human solid tumor cell lines and bioactivity in BST.
Main Results:
- Five flavonoids, acacetin (1), secundiflorol I (2), mucronulatol (3), isomucronulatol (4), and isovestitol (5), were isolated.
- Compounds 2-5 were reported from this species for the first time.
- Acacetin (1) exhibited significant cytotoxicity against the prostate cancer cell line (PC-3).
- Corrections were made to the previously reported 13C NMR resonance assignments for compounds 1-3.
Conclusions:
- The study successfully isolated and identified five flavonoids from Robinia pseudoacacia.
- Acacetin demonstrates potential as a cytotoxic agent against prostate cancer.
- This research contributes to the phytochemical understanding of Robinia pseudoacacia and provides corrected spectral data.
Related Concept Videos
01:17Oxidation of Phenols to Quinones
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
01:25Cell Signaling in Plants
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...