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Compound 5 from Fagonia arabica

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – 27-Hydroxy-oleanolic Acid

Biological source: Fagonia arabica [1]

C52H84O22: 1060.545

[α]D25 + 16.0° (c 0.50, MeOH) [1]

FAB-MSm/z: 1083 [M + Na]+, 921, 840, 664, 576, 532, 437, 391, 307 [1]

1H NMR (400 MHz, J/Hz, C5D5N): 0.85, 0.88, 0.91, 1.09, 1.11, 1.23, (s, CH3 × 6), 3.13 (dd, J = 12.0, 4.5, H-3), 5.80 (t, J = 3.0, H-12)

α-L-Arap: 4.70 (d, J = 7.1, H-1), 4.64 (dd, J = 7.0, .8.8, H-2), 4.27 (H-3), 4.48 (m, H-4), 3.69 (d, J = 11.0, H-5), 4.16 (H-5)

β-D-Glcp: 5.26 (d, J = 7.8, H-1), 3.99 (t, J = 7.8, H-2), 4.2 (H-3), 4.30 (H-4), 3.92 (m, H-5), 4.24, 4.44 (H2-6)

β-D-Xylp: 5.37 (d, J = 7.6, H-1), 4.0 (t, J = 8.0, H-2), 4.09 (t, J = 8.0, H-3), 4.2 (H-4), 3.44 (brt, J = 10.0, H2-5)

β-D-Glcp′: 6.34 (d, J = 8.1, H-1), 4.18 (t, J = 8.0, H-2), 4.26 (H-3), 4.30 (H-4), 4.02 (m, H-5), 4.38 (dd, J = 12.0, 4.5, H-6), 4.44 (H-6) [1]

13 C NMR(100.40...

References

  1. 1.
    T. Miyase, F.R. Melek, O.D. El-Gindi, S.M. Abdel-Khalik, M.R. El-Gindi, M.Y. Haggag, S.H. Hilal, Phytochemistry 41, 1175 (1996)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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