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Ilexoside XLV

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – 24-Oxy-rotundioic Acid

Biological source: Ilex rotunda [1]

C36H56O12: 680.377

Mp: 267–269°C (MeOH) [1]

[α]D22 + 24.7° (c 1.2, MeOH) [1]

FAB-MSm/z: 679 [M-H], 517 [M-H-Glc] [1]

1H NMR (400 MHz, J/Hz, C5D5N): 1.08 (d, J = 6.5, CH3), 1.09, 1.19, 1.43, 1.63 (s, CH3 × 4), 2.42 (dt, J = 14, 3, Hβ-15), 2.93 (s, H-18), 3.06 (dt, J = 14, 3, Hα-16), 4.54, 4.83 (d, J = 10.5, H2-23), 4.74 (dd, J = 11, 4.5, H-3), 5.57 (brt, H-12)

β-D-Glcp: 6.26 (d, J = 8.0, H-1), 4.23 (dd, J = 8.0, 8.0, H-2), 4.30 (m, H-3, 4), 4.08 (m, H-5), 4.40 (dd, J = 12.0, 4.0), 4.50 (dd, J = 12.0, 2.5, H2-6) [1]

13 C NMR (100 MHz, C 5D 5N): [ 1]

Table 1

C-1

39.3

C-16

26.1

Glc-1

95.9

2

28.5

17

48.6

2

74.1

3

77.1

18

54.5

3

79.0

4

58.0

19

72.7

4

71.3

5

52.7

20

42.0

5

79.3

6

22.7

21

26.8

6

62.2

7

33.9

22

37.7

   

8

40.9

23

179.6

   

9

48.3

24

62.4

   

10

37.0

25

16.3

   

11

24.4

26

17.2...

References

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

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