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Cayaponoside D3a

Reference work entry

CAS Registry Number: 151466-45-4 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 29-Nor-25-hydroxy-isocucurbitacin R-3,23-diene

Biological source: Cayaponia tayuya [1]

C35H52O12: 664.345

Mp: 170–173°C [1]

[α]D26 + 30.3° (c 1.25, MeOH) [1]

UV λmaxMeOH nm (log ε): 203 (3.93), 300 (4.04) [1]

FAB-MSm/z: 664 [M], 501 [M-H-162], 385 [1]

HR-FAB-MSm/z: 687.3357 [M + Na]+ [1]

1H NMR (400 MHz, J/Hz, CD3OD): 2.19 (dd, J = 5, 14), 2.38 (t, J = 14, H2-1), 6.48 (m, H-6), 2.31 (brdd, J = 6, 20), 2.61 (m, H2-7), 2.11 (d, J = 8, H-8), 3.00 ( brd, J = 14, H-10), 2.53, 3.15 (dd, J = 14, H2-12), 1.54 (d, J = 14), 1.93 (dd, J = 10, 14, H2-15), 4.64 (dd, J = 7, 10, H-16), 2.37 (d, J = 7, H-17), 0.96 (s, CH3-18), 1.11 (s, CH3-19), 1.22 (s, CH3-21), 3.96 (d, J = 6, H-22), 5.77 (dd, J = 6, 16, H-23), 5.85 (d, J = 16, H-24), 1.27 (s, CH3-26), 1.27 (s, CH3-27), 2.14 (s, CH3-28), 1.28 (s, CH3-30)

β-D-Glcp:...

References

  1. 1.
    E. Himeno, T. Nagao, J. Honda, H. Okabe, N. Irino, T. Nakasumi, Chem. Pharm. Bull. 42(11), 2301 (1994)CrossRefGoogle Scholar

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