A new geranyl flavanone from Macaranga triloba

Area of Science:

• Phytochemistry
• Natural Products Chemistry
• Organic Chemistry

Background:

• Macaranga triloba (Euphorbiaceae) is a plant species known for its diverse chemical constituents.
• Flavonoids and their derivatives are a significant class of natural products with various biological activities.
• Previous research on Macaranga species has identified numerous bioactive compounds.

Purpose of the Study:

• To isolate and characterize novel chemical compounds from the leaves of Macaranga triloba.
• To elucidate the structure of a newly discovered geranyl flavanone.
• To contribute to the understanding of the phytochemical diversity within the Euphorbiaceae family.

Main Methods:

• Extraction of compounds from Macaranga triloba leaves.
• Isolation of individual compounds using chromatographic techniques.
• Structure elucidation of isolated compounds employing 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy.
• Analysis of spectroscopic data to confirm the chemical structure.

Main Results:

• Isolation of a new geranyl flavanone, designated 2 omino-hydroxy-macarangaflavnone A (1).
• Isolation of a known compound, 4 omino,7-dihydroxy-8-methylflavan.
• Complete structural determination of compound 1 through comprehensive spectroscopic analysis, particularly NMR.
• Confirmation of the chemical identity and structure of both isolated compounds.

Conclusions:

• The leaves of Macaranga triloba are a source of unique geranyl flavanones.
• 2 omino-hydroxy-macarangaflavnone A represents a novel chemical entity.
• Spectroscopic methods, especially NMR, are crucial for the structural elucidation of complex natural products.
• This study expands the knowledge of Macaranga triloba phytochemistry and natural product discovery.