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Kizuta-Saponin K7

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,20,26-tetraol

Biological source: Hedera rhombea [1]

C36H62O9: 638.439

Mp: 128–132°C (dil. MeOH) [1]

[α]D20 + 22.3° (c 0.97, MeOH) [1]

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

1H NMR (100 MHz, J/Hz, C5D5N): 0.99 (s, CH3-18), 0.99 (s, CH3-19), 1.09 (s, CH3-30), 1.40 (s, CH3-21), 1.46 (s, CH3-29), 1.82 (s, CH3-27), 1.99 (s, CH3-28), 3.56 (t-like, H-3), 5.75 (t-like, H-24)

β-D-Glcp: 4.91 (d, J = 7.1, H-1) [1]

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

Table 1

C-1

39.5

C-16

28.1

Glc-1

103.5

2

28.1

17

50.4

2

75.2

3

78.6

18

17.6

3

78.6

4

40.4

19

17.3

4

71.8

5

61.9

20

74.1

5

78.4

6

67.8

21

26.0

6

62.9

7

48.1

22

41.5

   

8

41.8

23

22.9

   

9

50.7

24

129.4

   

10

39.5

25

132.2

   

11

21.9

26

75.2

   

12

25.4

27

14.2

   

13

42.2

28

32.0

   

14

50.7

29

16.5

   

15

31.6

30

16.8

   

References

  1. 1.
    H. Kizu, M. Koshijima, M. Hayashi, T. Tomimori, Chem. Pharm. Bull. 33(4), 1400 (1985)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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