Cumingianoside G

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 3α,7α,23(R),24(S)-Pentahydroxy-14,18-cycloapotirucallan

Biological source: Dysoxylum cumingianum [1]

C36H62O10: 654.434

1H NMR (400 MHz, J/Hz, C5D5N + D2O): 3.63 (brs, H-3), 2.50 (d, J = 12.0, H-5), 4.13 (brs, H-7), 0.59, 0.89 (both d, J = 5.5, 5.5, H2-18), 0.93 (s, CH3-19), 1.10 (d, J = 6.0, CH3-21), 4.50 (brt, J = 6.0, H-23), 3.59 (brs, H-24), 1.60 (s, CH3-26), 1.64 (s, CH3-27), 1.30 (s, CH3-28), 0.90 (s, CH3-29), 1.07 (s, CH3-30)

β-D-Glcp: 4.82 (d, J = 8.0, H-1), 3.96 (dd, J = 8.0, 9.5, H-2), 4.22 (t, J = 9.5, H-3), 4.08 (t, J = 9.5, H-4), 3.94 (ddd, J = 3.0, 6.0, 9.5, H-5), 4.27 (dd, J = 6.0, 11.5, H-6), 4.52 (dd, J = 3.0, 11.5, H-6) [1]

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

Table 1

C-1

34.0

C-16

26.4

Glc-1

100.5

2

26.6

17

53.7

2

75.5

3

75.9

18

17.6

3

78.4

4

38.0

19

16.6

4

72.5

5

40.4

20

33.3

5

78.0

6

21.1

21

19.8

6

63.5

7

78.3

22

39.8

   

8

35.7

23

69.7...

References

  1. 1.
    T. Fujioka, A. Sakurai, K. Mihashi, Y. Kashiwada, I.-S. Chen, K.-H. Lee, Chem. Pharm. Bull. 45(1), 68 (1997)CrossRefGoogle Scholar

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