Cayaponoside C3

Reference work entry

CAS Registry Number: 151466-44-3 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-ene

Biological source: Cayaponia tayuya [1]

C35H52O12: 664.345

Mp: 163–168°C [1]

[α]D25 + 26.5° (c 1.35, MeOH) [1]

UV λmaxMeOH nm (log ε): 204 (3.97), 300 (4.06) [1]

FAB-MSm/z: 663 [M-H], 501 [M-H-162], 385 [1]

HR-FAB-MSm/z: 687.3352 [M + Na]+ [1]

1H NMR (400 MHz, J/Hz): 2.23 (dd, J = 5, 14), 2.38 (t, J = 14, H2-1), 6.48 (m, H-6), 2.29 (brdd, J = 8, 22), 2.60 (m, H2-7), 2.10 (d, J = 8, H-8), 3.02 (brd, J = 14, H-10), 2.58, 3.27 (d, J = 15, H2-12), 1.43 (d, J = 13), 1.88 (dd, J = 9, 13, H2-15), 4.44 (dd, J = 7, 9, H-16), 2.55 (d, J = 7, H-17), 0.93 (s, CH3-18), 1.11 (s, CH3-19), 1.37 (s, CH3-21), 2.72, 2.85 (ddd, J = 6, 10, 18, H2-23), 1.72 (m, H2-24), 1.18 (s, CH3-26), 1.18 (s, CH3-27), 2.15 (s, CH3-28), 1.30 (s, CH3-30)

β-D-Glcp: 4.72 (d, J = 7, H-1), 3.31–3.38...

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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