Compound 6 from Fagonia arabica

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – Ursolic Acid

Biological source: Fagonia arabica [1]

C52H84O21: 1044.550

[α]D25 + 14.8° (c 1.32, MeOH) [1]

FAB-MSm/z: 1067 [M + Na]+, 905, 860, 740, 678, 439, 392, 307, 248 [1]

1H NMR (400 MHz, J/Hz, C5D5N): 0.89, 1.09, 1.13, 1.21, 1.28 (s, CH3 × 5), 0.91, 0.95 (d, CH3 × 2), 2.52 (d, J = 11.0, H-18), 3.26 (dd, J = 10.0, 4.0, H-3), 5.44 (t, J = 3.0, H-12)

α-L-Arap: 4.75 (d, J = 7.0, H-1), 4.64 (dd, J = 9.0, 7.0, H-2), 4.27 (H-3), 4.48 (m, H-4), 3.66 (d, J = 11.2, H-5), 4.16 (H-5)

β-D-Glcp: 5.25 (d, J = 7.8, H-1), 3.98 (t, J = 8.0, H-2), 4.08 (t, J = 8.0, H-3), 4.30 (H-4), 3.91 (m, H-5), 4.24, 4.44 (H2-6)

β-D-Xylp: 5.35 (d, J = 7.5, H-1), 4.0 (t, J = 8.0, H-2), 4.08 (t, J = 8.0, H-3), 4.2 (H-4), 3.43 (t, J = 9.5, H-5)

β-D-Glcp′: 6.24 (d, J = 8.0, H-1), 4.18 (t, J = 8.0, H-2), 4.26 (H-3), 4.30 (H-4), 4.01 (m, H-5), 4.38 (dd, J = 12.0, 4.5,...

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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