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Kudzusaponin B1

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – Kudzusapogenol B

Biological source: Pueraria thomsonii [1]

C48H76O21: 988.487

[α]D25 −8.7° (c 0.66, C5H5N:H2O 1:1) [1]

FAB-MS (positive ion mode) m/z: 1011.4824 (M + Na)+, 989 (M + H)+, 865 (M + Na-Rha)+, 843 (M + H-Rha)+, 681 (M + H-Rha-Gal)+ [1]

FAB-MSm/z: 987 (M-H), 841 (M-H-Rha), 679 (M-H-Rha-Gal), 503 (M-H-Rha-Gal-GlcUA) [1]

1H NMR (270 MHz, J/Hz, C5D5N): 0.71, 0.96, 1.29, 1.29, 1.41, 1.96 (s, CH3 × 6), 5.33 (brs, H-12)

α-L-Rhap: 6.17 (brs, H-1), 1.72 (d, J = 6.0, CH3-6)

β-D-Galp: 5.68 (d, J = 8.0, H-1) [1]

13 C NMR (270 MHz, C 5D 5N): [ 1]

Table 1

C-1

38.5

C-16

27.4

GlcUA-1

105.4

Rha-1

102.5

2

26.5

17

39.0

2

78.5

2

72.4

3

91.1

18

42.8

3

76.6

3

72.8

4

43.8

19

42.5

4

73.9

4

74.4

5

55.9

20

49.4

5

77.8

5

69.4

6

18.5

21

70.8

6

172.4

6

19.0

7

32.8

22

79.2

Gal-1

101.7

   

8

40.1

23

22.9

2

77.9

   

9

47.6

24

63.6

3

76.5

   

10

36.4

25

15.7

References

  1. 1.
    T. Arao, T. Idzu, J. Kinjo, T. Nohara, R. Isobe, Chem. Pharm. Bull. 44(10), 1970 (1996)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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