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Kizuta-Saponin K4

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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]

C38H64O10: 680.449

Mp: 116–120°C (Et2O-CHCl3) [1]

[α]D20 + 25.1° (c 1.50, MeOH) [1]

IR (KBr) νmax cm−1: 3400, 1710, 1250, 1100–1000 [1]

1H NMR (100 MHz, J/Hz, C5D5N): 0.93 (s, CH3-18), 0.99 (s, CH3-19), 1.40 (s, CH3-20), 1.06 (s, CH3-29), 1.32 (s, CH3-30), 1.65 (s, CH3-28), 1.82 (s, CH3-27), 2.10 (s, Ac), 4.76 (t-like, H-3), 5.73 (t-like, H-24)

β-D-Glcp: 4.91 (d, J = 7.3, H-1) [1]

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

Table 1

C-1

38.8

C-16

28.0

Glc-1

103.5

2

23.9

17

50.4

2

75.2

3

81.3

18

17.5

3

78.6

4

38.9

19

17.3

4

71.8

5

61.5

20

74.1

5

78.4

6

67.4

21

26.1

6

62.9

7

47.9

22

41.5

   

8

41.7

23

22.9

   

9

50.6

24

129.4

   

10

39.2

25

132.2

   

11

21.9

26

75.2

   

12

25.3

27

14.3

   

13

42.1

28

31.3

   

14

50.7

29

17.0

   

15

31.6

30

16.8

   
   

Ac

170.9

   
     

21.2

 

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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