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Oleanane trietrpenoids from Cedrela montana (Meliaceae).

Leonardo Castellanos¹, Rosabel S de Correa, Eduardo Martínez

¹Departamento de Química, Universidad Nacional de Colombia, Ciudad Universitaria, Santa Fé de Bogotá.

Zeitschrift Fur Naturforschung. C, Journal of Biosciences

|September 21, 2002

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Two new oleanane triterpenes were isolated from Cedrela montana fruits and seeds. These compounds, along with known substances, were identified using spectroscopic methods like 2D NMR.

Area of Science:

Phytochemistry
Natural Products Chemistry
Organic Chemistry

Background:

Cedrela montana (Meliaceae) is a plant species with potential for novel compound discovery.
Triterpenes and limonoids are classes of natural products known for diverse biological activities.

Purpose of the Study:

To isolate and characterize new oleanane-type triterpenes from Cedrela montana.
To identify other known compounds present in the plant material.

Main Methods:

Isolation of compounds using chromatographic techniques.
Structure elucidation of new compounds utilizing spectroscopic methods, including 2D Nuclear Magnetic Resonance (NMR).

Main Results:

Two new oleanane-type triterpenes: 3-oxo-11alpha,12alpha-epoxy-oleanan-28,13beta-olide and 3-oxo-olean-11-en-28,13beta-olide.

Related Experiment Videos

Isolation of known compounds: oleanonic acid, beta-sitosterol, stigmasterol, and the limonoid photogedunin.

Confirmation of structures through comprehensive spectroscopic analysis.

Conclusions:

Cedrela montana is a source of novel oleanane-type triterpenes.
The study expands the knowledge of the chemical constituents of Cedrela montana.
Spectroscopic methods are effective for structural determination of complex natural products.