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

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Two new flavones from Salvia plebeia.

Min-Rong Jin¹, Hong Xu, Chao-Hui Duan

¹a Key Laboratory of Standardization of Chinese Medicines, Ministry of Education, Institute of Chinese Materia Medica of Shanghai University of Traditional Chinese Medicine , Cai Lun Road 1200, Zhangjiang , Shanghai 201203 , P.R. China.

Natural Product Research

|February 13, 2015

Summary

Two new flavones were isolated from Salvia plebeia, with some showing significant anti-tyrosinase and anti-inflammatory activities. These findings highlight the plant

Keywords:

Salvia plebeian anti-inflammatory anti-tyrosinase flavones

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Area of Science:

Phytochemistry
Pharmacology

Background:

Salvia plebeia. R. Br. is a plant known for its traditional uses.
Natural products chemistry involves the isolation and characterization of bioactive compounds from plants.

Purpose of the Study:

To isolate and identify chemical constituents from Salvia plebeia.
To evaluate the isolated compounds for anti-tyrosinase and anti-inflammatory activities.

Main Methods:

Phytochemical investigation using spectral analyses (e.g., NMR, MS) for structure determination.
Biological assays to assess anti-tyrosinase and anti-inflammatory potential.

Main Results:

Two new flavones, neocafhispidulin (1) and 6″-O-acetyl homoplantaginin (2), were identified.
Compounds 3 and 4 were reported from this plant for the first time.
Compounds 1, 5, 8, 10, and 11 demonstrated anti-tyrosinase activity.
Compounds 3, 4, and 13 exhibited potential anti-inflammatory effects.

Conclusions:

Salvia plebeia is a source of novel and known flavones with biological activities.
The identified compounds, particularly neocafhispidulin and others, show promise for further development as anti-tyrosinase and anti-inflammatory agents.