First seco-C oleananes from nature.

Luisa U Román; Diana Guerra-Ramírez; Gerardo Morán; Iván Martínez; Juan D Hernández; Carlos M Cerda-García-Rojas; J Martín Torres-Valencia; Pedro Joseph-Nathan

doi:10.1021/ol036107j

PubMed · 14723521

First seco-C oleananes from nature.

Luisa U Román·Diana Guerra-Ramírez·Gerardo Morán·Iván Martínez·Juan D Hernández·Carlos M Cerda-García-Rojas·J Martín Torres-Valencia·Pedro Joseph-Nathan

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Abstract

[structure: see text] The triterpenes 8,14-seco-oleana-8(26),13-dien-3beta-ol (1) and its acetyl derivative 2 were isolated from Stevia viscida and Stevia eupatoria, respectively. Their structures were elucidated by 2D NMR, including carbon-carbon connectivity experiments, and confirmed by X-ray diffraction analysis of ketone 3. The absolute configuration was determined by NMR analysis of the Mosher esters of 1. The biogenetic implications of the new substances are discussed.

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Crystallography, X-Ray Magnetic Resonance Spectroscopy Models, Molecular Molecular Conformation Oleanolic Acid Stevia Triterpenes Journal Article Research Support, Non-U.S. Gov't

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Luisa U Román, Diana Guerra-Ramírez, Gerardo Morán, Iván Martínez, Juan D Hernández, Carlos M Cerda-García-Rojas, J Martín Torres-Valencia, Pedro Joseph-Nathan. 2004-01-22. First seco-C oleananes from nature.. https://doi.org/10.1021/ol036107j

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