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Hederoside E1

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – Eritrodiol

Biological source: Hedera taurica [1]

C42H70O12: 766.486

[α]D20 + 5° (c 0.5, C5H5N) [1]

IR (film) νmax cm−1: 3400, 2925, 2870, 1645, 1540, 1455, 1365, 1300, 1160, 1070, 1025, 890, 820 [1]

FAB-MSm/z: 784 [M + NH4]+, 767 [M + H]+, 622 [M + NH4-162]+, +605 [M + H-162]+, 460 [M + NH4-162-162]+, 443 [M + H-162-162]+, 342 [Glc-Glc-NH3]+, 180 [Glc-NH3]+ [1]

1H NMR (250 MHz, J/Hz, C5D5N) (for peracetate): 3.11 (dd, J = 5.3, 11.5, H-3), 5.21 (brt, H-12), 3.72 (d, J = 11.0, Hb-28), 4.03 (d, Ha-28), 2.0–2.1 (s, Acx8)

β-D-Glcp: 4.46 (d, J = 7.7, H-1), 3.81 (dd, J = 9.5, H-2), 5.17 (t, J = 9.5, H-3), 4.92 (t, J = 9.5, H-4), 3.62–3.71 (m, H-5), 4.00–4.11 (m, Hb-6), 4.22–4.32 (m, Ha-6)

β-D-Glcp′: 4.71 (d, J = 8.0, H-1), 4.92 (dd, J = 9.7, H-2), 5.18–5.30 (m, H-3, H-4), 3.62–3.71 (m, H-5), 4.00–4.11 (m, Hb-6), 4.22–4.32 (m, Ha-6) [1]

13 C NMR...

References

  1. 1.
    V.I. Grishkovets, A.A. Loloiko, A.S. Shashkov, V.Ya. Chirva, Chem. Nat. Comp. 26(2), 186 (1990)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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