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Ilexoside XLIV

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – Ilexosapogenin B

Biological source: Ilex rotunda [1]

C42H68O15: 812.455

Mp: 225–227°C (MeOH) [1]

[α]D22 + 5.8° (c 4.3, MeOH) [1]

FAB-MSm/z: 811 [M-H], 649 [M-H-Glc], 487 [M-H-2Glc] [1]

1H NMR (600 MHz, J/Hz, C5D5N): 0.89, 0.96, 1.01, 1.13 (s, CH3 × 4), 0.98 (d, J = 6.5, CH3), 2.62 (d, J = 11.4, H-18), 3.70, 4.33 (d, J = 11.0, H2-23), 3.86 (dd, J = 9.4, 3.5, H-30), 4.00 (dd, J = 9.4, 5.0, H-30), 4.26 (dd, J = 11.0, 4.5, H-3), 5.44 (brt, H-12)

β-D-Glcp: 5.13 (d, J = 7.8, H-1), 4.04 (dd, J = 8.8, 8.5, H-2), 4.18 (dd, J = 8.8, 8.8, H-3), 4.23 (dd, J = 9.3, 8.8, H-4), 3.90 (m, H-5), 4.38 (dd, J = 11.7, 5.2), 4.52 (dd, J = 11.7, 2.2, H2-6)

β-D-Glcp′: 4.87 (d, J = 7.5, H-1), 4.06 (dd, J = 8.8, 7.5, H-2), 4.29 (dd, J = 8.8, 8.8, H-3), 4.25 (dd, J = 8.8, 9.2, H-4), 4.05 (m, H-5), 4.42 (dd, J = 12.0, 5.5), 4.60 (dd, J = 12.0, 2.2, H2-6) [1]

13 C...

References

  1. 1.
    K. Amimoto, K. Yoshikawa, S. Arihara, Chem. Pharm. Bull. 41(1), 39 (1993)CrossRefGoogle Scholar

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