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Kizuta-Saponin K7b

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 20(S)-Dammar-24-en-3β,6α,20,21,26-pentaol

Biological source: Hedera rhombea [1]

C36H62O10: 654.434

Mp: 131–134°C (dil. MeOH) [1]

[α]D23 + 23.0° (c 0.66, MeOH) [1]

IR (KBr) νmax cm−1: 3400, 1100–1000 [1]

1H NMR (100 MHz, J/Hz, C5D5N): 3.55 (t-like, H-3), 0.98 (s, CH3-18), 1.01 (s, CH3-19), 4.03 (s, H2-20), 5.77 (H-24), 1.82 (s, CH3-27), 1.11 (s, CH3-28), 2.00 (s, CH3-29), 1.46 (s, CH3-30)

β-D-Glcp: 4.9 (d, J = 7.3, H-1) [1]

13 C NMR (25 MHz, C 5D 5N): [ 1]

Table 1

C-1

39.5

C-16

28.2

Glc-1

103.6

2

28.1

17

46.3

2

75.2

3

78.6

18

17.6

3

78.6

4

40.4

19

17.4

4

71.8

5

61.9

20

76.6

5

78.4

6

67.8

21

66.8

6

62.9

7

48.1

22

36.2

   

8

41.9

23

22.9

   

9

50.9

24

129.5

   

10

39.5

25

132.2

   

11

21.9

26

75.2

   

12

24.8

27

14.3

   

13

41.5

28

32.0

   

14

50.6

29

16.5

   

15

31.8

30

16.8

   

References

  1. 1.
    H. Kizu, M. Koshijima, T. Tomimori, Chem. Pharm. Bull. 33(8), 3176 (1985)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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