Vina-Ginsenoside R25

Reference work entry

Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 3β,6α,12β,20-Tetrahyrdoxy-24-oxo-dammar-26-ene

Biological source: Panax vietnamensis [1]

C42H70O15: 814.471

[α]D25 + 30.8° (c 0.6, MeOH) [1]

IR (KBr) νmax cm−1: 3400, 1660, 1635, 890 [1]

FAB-MSm/z: 813.4633 (M-H) [1]

1H NMR (J/Hz, C5D5N): 1.71, 1.08 (m, H2-1), 1.94, 1.88 (m, H2-2), 3.48 (dd, J = 11.5, 4.4, H-3), 1.37 (d, J = 10.2, H-5), 4.37 (td, J = 10.2, 2.9, H-6), 2.43 (dd, J = 12.9, 2.9, H-7), 1.88 (m, H-7), 1.50 (m, H-9), 2.03 (m), 1.50 (m, H2-11), 4.10 (m, H-12), 2.03 (m, H-13), 1.64, 1.06 (m, H2-15), 1.73, 1.31 (m, H2-16), 2.48 (m, H-17), 1.03 (s, CH3-18), 1.13 (s, CH3-19), 1.53 (s, CH3-21), 2.65 (ddd, J = 14.4, 9.5, 4.7, H-22), 2.25, 2.08 (m, H2-22), 3.30 (ddd, J = 16.6, 10, 4.7, H-23), 3.03 (ddd, J = 16.6, 9.5, 6.0, H-23), 6.20, 5.66 (brs, H2-26), 1.85 (s, CH3-27), 2.05 (s, CH3-28), 1.60 (s, CH3-29), 0.81 (s, CH3-30)

β-D-Glcp:...

References

  1. 1.
    Q. Tran, I.K. Adnyana, Y. Tezuka, T. Nagaoka, Q.K. Tran, Sh Kadota, J. Nat. Prod. 64(4), 456 (2001)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Personalised recommendations