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Cumingianoside L

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 3-Oxo-7α,23(R),24(S),25-tetraoxy-14,18-cycloapotirucallan

Biological source: Dysoxylum cumingianum [1]

C36H60O10: 652.418

Mp: 145–148°C (dil. MeOH) [1]

[α]D25 −14.1° (c 0.52, CHCl3) [1]

FAB-MS (positive ion mode) m/z: 675.4084 (M + Na)+ [1]

FAB-MSm/z: 651 (M-H) [1]

1H NMR (400 MHz, J/Hz, C5D5N-D2O): 2.44 (brd, J = 10.0, H-5), 4.07 (brs, H-7), 0.75, 0.95 (d, J = 6.0, 6.0, H2-18), 0.90 (s, CH3-19), 1.12 (d, J = 6.0, CH3-21), 4.53 (brt, J = 6.0, H-23), 3.60 (s, H-24), 1.61 (s, CH3-26), 1.64 (s, CH3-27), 1.38 (s, CH3-28), 1.10 (s, CH3-29), 1.04 (s, CH3-30)

β-D-Glcp: 4.79 (d, J = 7.0, H-1), 3.98 (dd, J = 7.0, 9.0, H-2), 4.21 (t, J = 9.0, H-3), 4.12 (t, J = 9.0, H-4), 3.96 (m, H-5), 4.30 (dd, J = 6.0, 11.0, H-6), 4.53 (dd, J = 3.0, 11.0, H-6) [1]

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

Table 1

C-1

34.3

C-16

26.4

Glc-1

101.3

2

39.7

17

53.5

2

75.3

3

217.3

18

17.9

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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