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Cayaponoside D

Reference work entry

CAS Registry Number: 147764-94-1 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 22,25-Dihydroxy-fevicordin A

Biological source: Cayaponia tayuya [1]

C35H52O12: 664.345

Mp: 170–173°C [1]

[α]D26 − 7.6° (c 2.23, MeOH) [1]

UV λmaxMeOH nm (logε): 207 (4.43), 220 (4.06), 282 (3.31) [1]

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

HR-FAB-MSm/z: 687.3374 [M + Na]+ [1]

1H NMR (J/Hz): 6.63 (s, H-1), ca 2.65, 2.85 (m, H2-6), ca 1.96, 2.27 (m, H2-7), 2.15 (brd, J = 7, H-8), 2.59, 2.78 (d, J = 14, H2-12), 1.59 (d, J = 14), 1.99 (dd, J = 10, 14, H2-15), 4.62 (t-like, J = 7, H-16), 2.34 (d, J = 7, H-17), 1.00 (s, CH3-18), 1.30 (s, CH3-19), 1.21 (s, CH3-21), 3.95 (brd, J = 5, H-22), 5.74 (dd, J = 5, 16, H-23), 5.83 (dd, J = 1, 16, H-24), 1.25 (s, CH3-26), 1.25 (s, CH3-27), 2.09 (s, CH3-28), 0.98 (s, CH3-30)

β-D-Glcp: 4.57 (d, J = 7, H-1), 3.45–3.49 (H-2, 3, 4), 3.31 (m, H-5), 3.84 (dd, J = 4,...

References

  1. 1.
    E. Himeno, T. Nagao, J. Honda, H. Okabe, N. Irino, T. Nakasumi, Chem. Pharm. Bull. 42(11), 2295 (1994)CrossRefGoogle Scholar

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