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Cayaponoside D3b

Reference work entry

CAS Registry Number: 151466-46-5 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 29-Nor-22,25-hydroxy-isocucurbitacin R-3-ene

Biological source: Cayaponia tayuya [1]

C35H54O12: 666.361

Mp: 171–175°C [1]

[α]D26 + 36.9° (c 1.53, MeOH) [1]

UV λmaxMeOH nm (log ε): 205 (3.88), 300 (4.07) [1]

FAB-MSm/z: 666 [M], 503 [M-H-162], 385 [1]

HR-FAB-MSm/z: 689.3529 [M + Na]+, 667.3691 [M + H]+ [1]

1H NMR (400 MHz, J/Hz): 2.21 (dd, J = 5, 15), 2.38 (t, J = 15, H2-1), 6.49 (m, H-6), 2.31 (brdd, J = 5, 21), 2.62 (m, H2-7), 2.12 (d, J = 9, H-8), 3.10 (brd, J = 14, H-10), 2.56, 3.19 (dd, J = 14, H2-12), 1.54 (d, J = 13), 1.92 (dd, J = 9, 13, H2-15), 4.60 (dd, J = 7, 9, H-16), 2.39 (d, J = 7, H-17), 0.97 (s, CH3-18), 1.11 (s, CH3-19), 1.22 (s, CH3-21), 3.30 (H-22), 1.45 (m, H2-23), 1.45, 1.80 (m, H2-24), 1.18 (s, CH3-26), 1.19 (s, CH3-27), 2.15 (s, CH3-28), 1.31 (s, CH3-30)

β-D-Glcp: 4.72 (d, J =...

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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