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Gynosaponin TN-2

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 2α-Hydroxy-20(S)-protopanaxadiol

Biological source: Gynostemma pentaphyllum [1]

C42H72O13: 784.497

Mp: 236–240°C (MeOH-CHCl3-EtOAc (1:1:4)) [1]

[α]D24 + 11.6° (c 1.0, MeOH) [1]

IR (KBr) νmax cm−1: 3370, 1035 [1]

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

Table 1

C-4

39.8

Glc-1

98.0

Rha-1

101.6

8

40.0

2

74.9

2

72.2

10

38.4

3

79.2

3

72.8

17

51.5

4

71.4

4

74.2

20

83.1

5

76.6

5

69.3

21

22.2

6

67.1

6

18.6

22

36.0

       

24

125.8

       

25

130.9

       

References

  1. 1.
    M. Nagai, K. Izawa, S. Nagumo, N. Sakurai, T. Inoue, Chem. Pharm. Bull. 29(3), 779 (1981)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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