Latifoloside E

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

Biological source: Ilex latiolia [1, 2]

C53H86O22: 1074.561

Mp: 228–230°C [1]

[α]D25 + 16.4° (c 0.65, MeOH) [1]

IR (KBr) νmax cm−1: 3430, 2932, 1730, 1454, 1388, 1072 [1]

FAB-MSm/z: 1073 [M-1], 911 [M-1-162], 765 [M-1-162-146], 749 [M-1-2 × 162], 603 [M-1-146-2 × 162], 471 [M-1-146-2 × 162-132], 453 [M-1-146-2 × 162-132-H2O] [1]

1H NMR (400 MHz, J/Hz, C5D5N): 0.87, 1.12, 1.16, 1.17, 1.39, 1.71 (s, CH3 × 6), 0.96 (dd, J = 7.0, 3H), 3.27 (dd, J = 11.2, 4.3, Hα-3), 3.16 (s, Hα-18), 5.22 (s, HO-19), 5.50 (brs, H-12), 4.85 (d, J = 5.3, H-1 of Ara), 5.08 (d, J = 7.6, H-1 of Glc), 6.13 (brs, H-1 of Rha), 1.61 (d, J = 6.8, H-6 of Rha), 6.31 (d, J = 8.0, H-1 of Glc) [1]

13 C NMR (400 MHz, C 5D 5N): [ 1]

Table 1

C-1

39.3

C-16

24.8

Ara-1

104.8

Glc-1

104.7

2

27.0

17

48.5

2

74.7

2

75.1

3

88.4

18

47.4

3

82.1

3

78.3

4

39.8

19

73.6

4

68.2

4

References

  1. 1.
    M.-A. Ouyang, H.-Q. Wang, Y.-Q. Liu, Ch.-R. Yang, Phytochemistry 45(7), 1501 (1997)CrossRefGoogle Scholar
  2. 2.
    J. Huang, X. Wang, Y. Ogihara, N. Shimizu, T. Takeda, T. Akiyama, Chem. Pharm. Bull. 49(2), 239 (2001)CrossRefGoogle Scholar

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