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Kudinoside B

Reference work entry

CAS Registry Number: 181362-76-5 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – β-Kudinlactone

Biological source: Ilex kudingcha [1]

C47H74O19: 942.482

Mp: 218–221°C [1]

[α]D20−16.3° (c 0.19, C5H5N) [1]

IR (KBr) νmax cm−1: 3450–3200, 1730, 1640, 1450, 1380, 1070, 1040 [1]

FAB-MS m/z: 942 [M], 779 [M-1-162], 717 [M-1-H20-CO2-162], 555 [M-1-H2O-CO2-(2 × 162)], 423 [M-1-H2O-CO2-(2 × 162)-132] [1]

1H NMR (100 MHz, J/Hz, C5D5N): 0.85, 0.89, 1.14, 1.23, 1.50, 1.60, 1.64 (s, CH3 × 7)

α-L-Arap: 4.79 (d, J = 7.5, H-1)

β-D-Glcp: 5.17 (d, J = 7.9, H-1); β-D-Glcp′: 5.25 (d, J = 8.0, H-1) [1]

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

Table 1

C-1

39.3

C-16

26.9

Ara-1

107.2

Glc′-1

106.8

2

28.6

17

44.7

2

71.6

2

76.4

3

89.5

18

137.7

3

86.0

3

77.7

4

39.9

19

74.5

4

69.2

4

70.7

5

56.4

20

86.3

5

67.3

5

77.8

6

18.7

21

28.6

Glc-1

104.7

6

62.2

7

35.6

22

32.9

2

86.2

   

8

42.0

23

28.5

3

78.4

   

9

45.0

24

17.1

4

70.9

References

  1. 1.
    M.-A. Ouyang, H.-Q. Wang, Z.-L. Chen, Ch.-R. Yang, Phytochemistry 43(2), 443 (1996)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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