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Ilexoside XLIII

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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]

C36H58O11: 666.397

[α]D22 + 9.5° (c 2.1, MeOH) [1]

FAB-MSm/z: 665 [M-H], 503 [M-H-Glc] [1]

1H NMR (600 MHz, J/Hz, C5D5N): 1.04, 1.08, 1.24, 1.59, 1.65 (s, CH3 × 5), 2.48 (dt, J = 13.5, 3.5, Hβ-15), 2.96 (brs, H-18), 3.16 (dt, J = 14.0, 3.0, Hα-16), 3.71, 4.17 (d, J = 10.5, H2-23), 3.99 (dd, J = 11, 2.5, H-30), 4.19 (dd, J = 11, 4.5, H-3), 4.28 (dd, J = 11, 5, H-30), 5.59 (dd, J = 4, 3.5, H-12)

β-D-Glcp: 6.33 (d, J = 8.3, H-1), 4.24 (dd, J = 8.8, 8.8, H-2), 4.32 (dd, J = 9, 8.8, H-3), 4.38 (dd, J = 9.3, 9, H-4), 4.06 (m, H-5), 4.42 (dd, J = 12, 4), 4.48 (dd, J = 12, 2.5, H2-6) [1]

13 C NMR (125 MHz, C 5D 5N): [ 1]

Table 1

C-1

39.0

C-16

26.3

Glc-1

95.9

2

27.8

17

48.6

2

74.0

3

73.8

18

54.4

3

79.0

4

42.9

19

74.0

4

71.3

5

48.6

20

48.2

5

79.3

6

18.9

21

22.4

6

62.4

7

33.4

22

37.7

   

8

40.6

23

68.2...

References

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

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