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Actinostemmoside G

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,7β,20,27-pentaol

Biological source: Actinostemma lobatum [1]

C36H62O10: 654.434

FAB-MSm/z: 677.424 [M + Na]+ [1]

1H NMR (400 MHz, J/Hz, C5D5N): 0.97, 1.62 (H-1), 3.52 (dd, J = 7, 10, H-3), 1.28 (d, J = 11, H-5), 4.18 (dd, J = 9, 11, H-6), 3.88 (d, J = 9, H-7), 1.45 (s, H-9), 2.15 (ddd, J = 4, 10, 10, H-17), 1.28 (s, CH3-18), 0.99 (s, CH3-19), 1.49 (s, CH3-21), 2.50, 2.58 (m, H2-23), 5.48 (t, J = 7, H-24), 2.01 (s, CH3-26), 4.49, 4.56 (d, J = 12, H2-27), 1.90 (s, CH3-28), 1.39 (s, CH3-29), 1.08 (s, CH3-30)

β-D-Glcp: 5.05 (d, J = 8, H-1), 3.97 (dd, J = 8, 9, H-2), 4.23 (t, J = 9, H-3), 4.16 (t, J = 9, H-4), 3.88 (ddd, J = 9, 5, 3, H-5), 4.28 (dd, J = 5, 11), 4.45 (dd, J = 11, 3, H2-6) [1]

13 C NMR (100 MHz, C 5D 5N-D 2O): [ 1]

Table 1

C-1

39.4

C-16

28.1

Glc-1

98.6

2

27.9

17

47.6

2

75.6

3

78.3

18

12.1

3

79.0

4

40.3

19

17.8...

References

  1. 1.
    T. Fujioka, Y. Iwase, H. Okabe, K. Mihashi, T. Yamauchi, Chem. Pharm. Bull. 35(9), 3870 (1987)CrossRefGoogle Scholar

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