A New Friedelane Triterpenoid from the Branches of Maytenus Gonoclada (Celastraceae)

A new friedelane type triterpene, 3,16-dioxo-12?-hydroxyfriedelane was isolated from the chloroform extract of branches of Maytenus gonoclada Martius (Celastraceae) together with nine known compounds: 3,11-dioxofriedelane, 3,16-dioxofriedelane, 3,12-dioxofriedelane, 3-oxo-12?,29-dihydroxyfriedelane,...

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Bibliographic Details
Published in:Journal of chemical research 2011-10, Vol.35 (10), p.555-557
Main Authors: Silva, Fernando C, Rodrigues, Vanessa G, Duarte, Lucienir P, Silva, Gracia D F, Miranda, Roqueline R S, Filho, Sidney A V
Format: Article
Language:English
Subjects:
Chains
Chloroform
Hydrocarbons
Mass spectrometry
Nuclear magnetic resonance
Spectra
Stereochemistry
Two dimensional
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Summary:A new friedelane type triterpene, 3,16-dioxo-12?-hydroxyfriedelane was isolated from the chloroform extract of branches of Maytenus gonoclada Martius (Celastraceae) together with nine known compounds: 3,11-dioxofriedelane, 3,16-dioxofriedelane, 3,12-dioxofriedelane, 3-oxo-12?,29-dihydroxyfriedelane, 3-oxofriedelane (friedelin), 3?-hydroxyfriedelane, 3-oxo-12?-hydroxyfriedelane and 3?-hydroxylup-20(29)-ene (lupeol) and a mixture of long chain hydrocarbons. The structure and stereochemistry of the new friedelane triterpene were established from the 1H NMR and 13C NMR spectra including two-dimensional experiments (HSQC, HMBC and NOESY) and high resolution mass spectrometry.
ISSN:1747-5198
2047-6507
DOI:10.3184/174751911X13161944590173