A new chromone from Cassia nodosa

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Organic Chemistry

Background:

• Cassia nodosa is a plant species known for its potential medicinal properties.
• The isolation and characterization of bioactive compounds from medicinal plants are crucial for drug discovery.
• Flavonoids and chromones are classes of natural products with diverse biological activities.

Purpose of the Study:

• To isolate and identify chemical constituents from the leaves of Cassia nodosa.
• To characterize a novel chromone derivative and known flavonoids using spectroscopic techniques.
• To contribute to the understanding of the phytochemical profile of Cassia nodosa.

Main Methods:

• Phytochemical investigation of Cassia nodosa leaf extract.
• Isolation of compounds using chromatographic techniques.
• Structure elucidation using Infrared (IR), Ultraviolet (UV), Proton Nuclear Magnetic Resonance (1H-NMR), Carbon-13 Nuclear Magnetic Resonance (13C-NMR), and Mass Spectrometry (MS).

Main Results:

• A new chromone, 5,4 '-dihydroxy-7-methyl 3-benzyl chromone (1), was isolated.
• Three known flavonoid compounds were identified: unsubstituted flavone, kaempferol-3-o-rhamnoside, and quercetin-3-o-arabinoside.
• The structures of all isolated compounds were confirmed through comprehensive spectral and chemical analyses.

Conclusions:

• The phytochemical analysis of Cassia nodosa led to the discovery of a new chromone and the identification of known flavonoids.
• The established structures provide valuable data for further pharmacological studies of these compounds.
• This study expands the knowledge of Cassia nodosa's chemical constituents.