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Cumingianoside H

Reference work entry

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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]

C38H64O11: 696.444

[α]D25 −31.9° (c 0.52, CHCl3) [1]

FAB-MS (positive ion mode) m/z: 719.4346 (M + Na)+ [1]

FAB-MSm/z: 695 [M-H] [1]

1H NMR (400 MHz, J/Hz, C5D5N-D2O): 3.62 (brs, H-3), 2.52 (d, J = 12.0, H-5), 4.01 (brs, H-7), 0.60, 0.83 (d, J = 5.5, 5.5, H2-18), 0.95 (s, CH3-19), 1.11 (d, J = 6.0, CH3-21), 4.50 (brt, J = 7.0, H-23), 3.58 (brs, H-24), 1.59 (s, CH3-26), 1.62 (s, CH3-27), 1.31 (s, CH3-28), 0.91 (s, CH3-29), 0.11 (s, CH3-30)

β-D-Glcp: 4.73 (d, J = 7.0, H-1), 3.91 (dd, J = 7.0, 9.0, H-2), 4.16 (t, J = 9.0, H-3), 4.01 (t, J = 9.0, H-4), 3.93 (m, H-5), 4.67 (dd, J = 6.0, 12.0, H-6), 4.89 (dd, J = 2.0, 12.0, H-6) Acetyl: 2.06 (s) [1]

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

Table 1

C-1

34.0

C-16

26.1

Glc-1

101.1

2

26.4

17

53.6

2

75.1

3

75.6

18

17.6

3

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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