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Related Experiment Video

Updated: Jul 6, 2026

Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro

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

Two new flavones from Rubus biflorus Buch.

Shu-he Kang¹, Shang-zhen Zheng

¹School of Chemical Engineering, Northwest Minorities University, Lanzhou 730030, China. kangshuhe@163.com

Yao Xue Xue Bao = Acta Pharmaceutica Sinica

|March 15, 2008

Summary

Two new flavonoids, fenzhimines A and B, were isolated from Rubus biflorus Buch (Fenzhimei). Their chemical structures were determined using spectroscopic techniques and chromatography.

Area of Science:

Natural Product Chemistry
Phytochemistry
Organic Chemistry

Background:

Rubus biflorus Buch, known as Fenzhimei, is a plant with potential medicinal properties.
Investigating the chemical constituents of medicinal plants is crucial for discovering new bioactive compounds.

Purpose of the Study:

To isolate and characterize the chemical constituents of Rubus biflorus Buch.
To identify novel flavonoid compounds from this plant species.

Main Methods:

Silica gel column chromatography was employed for the isolation of compounds.
Spectroscopic techniques (e.g., NMR, Mass Spectrometry) were used for structure determination.

Main Results:

Two new flavonoid compounds, designated fenzhimines A and B, were successfully isolated.

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Last Updated: Jul 6, 2026

Extraction and Purification of Polyphenols from Freeze-dried Berry Powder for the Treatment of Vascular Smooth Muscle Cells In Vitro

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

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade

Published on: August 14, 2019

Fenzhimine A: 8-methyl-6-(3"-methylbut-2"-enyl)-5, 7-dihydroxy-5\[prime\]-methoxy-3\[prime\]', 4\[prime\]-methylenedioxy flavone.

Fenzhimine B: 8-methyl-5-methoxy-6,7-(2", 2"-dimethylpyran)-3\[prime\]', 4\[prime\]-methylenedioxy-5\[prime\]-(3\[prime\]\[prime\]\[prime\]-methylbut-2\[prime\]\[prime\]\[prime\]-enyl) flavone.

Conclusions:

The study successfully identified two previously unknown flavonoids from Rubus biflorus Buch.
These findings contribute to the understanding of the phytochemical profile of Rubus biflorus Buch.