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Cayaponoside D1

Reference work entry

CAS Registry Number: 162857-61-6 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 23,24-Dihydro-22,25-dihydroxy-fevicordin A

Biological source: Cayaponia tayuya [1]

C35H54O12: 666.361

Mp: 169–173°C [1]

[α]D27 − 2.7° (c 1.21, MeOH) [1]

UV λmaxMeOH nm (log ε): 206 (4.43), 220 (shoulder, 3.99), 280 (3.20) [1]

FAB-MSm/z: 665 [M-H], 503[M-H-162], 385 [1]

HR-FAB-MSm/z: 689.3516 [M + Na]+ [1]

1H NMR (J/Hz): 6.65 (s, H-1), 2.65 (ddd, J = 1, 9, 18), 2.85 (dd, J = 9, 18, H2-6), ca 1.98, 2.26 (m, H2-7), 2.16 (brd, J = 7, H-8), 2.62, 2.82 (d, J = 14, H2-12), 1.59 (d, J = 13), 1.97 (m, H2-15), 4.57 (brt, J = 7, H-16), 2.36 (d, J = 7, H-17), 1.00 (s, CH3-18), 1.30 (s, CH3-19), 1.21 (s, CH3-21), ca 3.30 (H-22), ca 1.40, 1.60 (m, H2-23), ca 1.40, 1.80 (H2-24), 1.17 (s, CH3-26), 1.18 (s, CH3-27), 2.09 (s, CH3-28), 1.00 (s, CH3-30)

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

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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