Advertisement

Cumingianoside K

Reference work entry

Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 3α,7α,23,24,25-Pentahydroxy-14,18-cycloapotirucallan

Biological source: Dysoxylum cumingianum [1]

C40H66O12: 738.455

[α]D25 −33.3° (c 0.58, CHCl3) [1]

FAB-MS (positive ion mode) m/z: 739.4452 (M + H)+ [1]

FAB-MSm/z: 737 (M-H) [1]

1H NMR (400 MHz, J/Hz, C5D5N + D2O): 4.92 (brs, H-3), 2.38 (d, J = 12.0, H-5), 4.01 (brs, H-7), 0.58, 0.70 (d, J = 6.0, 6.0, H2-18), 0.89 (s, CH3-19), 1.25 (d, J = 7.0, s, CH3-21), 4.36 (ddd, J = 3.0, 8.0, 8.0, H-23), 3.76 (d, J = 8.0, H-24), 1.69 (s, CH3-26), 1.71 (s, CH3-27), 1.11 (s, CH3-28), 0.89 (s, CH3-29), 1.06 (s, CH3-30)

β-D-Glcp: 4.73 (d, J = 8.0, H-1), 3.87 (dd, J = 8.0, 9.0, H-2), 4.16 (t, J = 9.0, H-3), 3.96 (t, J = 9.0, H-4), 3.95 (ddd, J = 1.5, 5.0, 9.0, H-5), 4.67 (dd, J = 5.0, 12.0, H-6), 4.91 (dd, J = 1.5, 12.0, H-6); Acetyl: 1.94 (s), Acetyl′: 2.04 (s) [1]

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

Table 1

C-1

34.5

C-16...

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

Copyright information

© Springer Science+Business Media New York 2013

Personalised recommendations