• Chemistry, Medicine
  • Published in
    Magnetic resonance in…
    2006
  • DOI:10.1002/mrc.1734

Structural determination of 3beta-stearyloxy-urs-12-ene from Maytenus salicifolia by 1D and 2D NMR and quantitative 13C NMR spectroscopy.

@article{Miranda2006StructuralDO,
  title={Structural determination of 3beta-stearyloxy-urs-12-ene from Maytenus salicifolia by 1D and 2D NMR and quantitative 13C NMR spectroscopy.},
  author={Roqueline Rodrigues Silva de Miranda and Gr{\'a}cia D. F. Silva and Lucienir P Duarte and Isabel C. P. Fortes and Sidney Augusto Vieira Filho},
  journal={Magnetic resonance in chemistry : MRC},
  year={2006},
  volume={44 2},
  pages={
          127-31
        }
}
Six pentacyclic triterpenoids, 3beta-stearyloxy-urs-12-ene (1), friedelin (2), 3beta-friedelinol (3), alpha-amyrin (4), beta-amyrin (5), and lupeol (6), have been isolated from the hexane extract of Maytenus salicifolia Reissek (Celastraceae) leaves. The molecular and structural formula as well as the stereochemistry of a new pentacyclic triterpene (1) were determined using data obtained from 1H and 13C NMR spectra, DEPT135 and by 2D HSQC, HMBC, COSY and NOESY experiments. The molecular formula… CONTINUE READING

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