Triterpenoids from Viburnum betulifolium

Area of Science:

• Natural Product Chemistry
• Phytochemistry
• Organic Chemistry

Background:

• Viburnum betulifolium is a plant species with potential for novel compound discovery.
• Triterpenoids are a diverse class of natural products with various biological activities.
• Isolation and characterization of new compounds contribute to the understanding of plant secondary metabolites.

Purpose of the Study:

• To isolate and characterize new triterpenoids from the aerial parts of Viburnum betulifolium.
• To elucidate the structures of the isolated compounds using spectroscopic methods.
• To identify a novel diene derivative of an isolated triterpenoid.

Main Methods:

• Extraction of plant material using 70% aqueous acetone.
• Isolation of compounds using chromatographic techniques.
• Structure elucidation via 1D NMR, 2D NMR, and High-Resolution Electrospray Ionization Mass Spectrometry (HR-ESI-MS).

Main Results:

• Two new triterpenoids, ursa-12-sene-3β,11β-diol 3-O-palmitate (1) and ursa-12-sene-1β,3β,11α-triol 3-O-palmitate (2), were successfully isolated.
• An artificial diene derivative of compound 2, ursa-12-dien-1β,3β-diol 3-O-palmitate (2a), was also identified.
• Comprehensive spectroscopic data confirmed the structures of the novel compounds.

Conclusions:

• The study successfully identified and characterized two new triterpenoids from Viburnum betulifolium.
• The findings expand the known chemical diversity of triterpenoids in this plant species.
• The characterized compounds represent potential leads for further phytochemical and pharmacological investigations.