Quadranoside X

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – 2α,3β,6β,19α,24-Pentahydroxy-olean-12-en-28-oic Acid

Biological source: Combretum quadrangulare [1]

C36H58O10: 650.402

[α]D25 + 15.6° (c 0.030, MeOH) [1]

IR (KBr) νmax cm−1: 3500, 1740, 1660 [1]

HR-FAB-MSm/z: 673.3896 [M + Na]+ [1]

1H NMR (400 MHz, J/Hz, C5D5N): 1.35 (m, H-1), 2.42 (dd, J = 12.7, 4.6, H-1), 4.28 (m, H-2), 4.20 (m, H-3), 1.77 (m, H-5), 1.84 (m, H-6), 2.74 (dd, J = 12.9, 4.8, H-6), 1.29 (m, H-7), 1.72 (m, H-9), 1.68 (m, H-11), 1.58 (m, H-12), 1.01, 2.08 (m, H2-15), 1.55, 2.25 (m, H2-16), 2.19 (d, J = 13.4, H-19), 2.54 (d, J = 13.4, H-19), 1.35, 2.52 (m, H2-21), 1.22, 1.62 (m, H2-22), 3.71 (d, J = 10.2, H-23), 4.23 (d, J = 10.2, H-23), 1.05 (s, CH3-24 ), 0.98 (s, CH3-25), 1.13 (s, CH3-26), 1.09 (s, CH3-27), 0.90 (s, CH3-29), 0.78 (s, CH3-30)

β-D-Glcp: 6.34 (d, J = 8.0, H-1), 4.16 (dd, J = 8.8, 8.0, H-2), 4.25 (dd, J = 9.0,...

References

  1. 1.
    I.K. Adnyana, Y. Tezuka, S. Awale, A.H. Banskota, K.Q. Tran, Sh. Kadota, Chem. Pharm. Bull. 48, 1114 (2000)CrossRefGoogle Scholar

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