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Cayaponoside C4

Reference work entry

CAS Registry Number: 159650-33-6 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 22,23,24,25,26,27,29-Heptanor-1,2,3,4,5,10-hexadehydro-cucurbit-6-ene

Biological source: Cayaponia tayuya [1]

C29H38O10: 546.246

Mp: 170–173°C [1]

[α]D − 39° (c 1.20, MeOH) [1]

UV λmax nm (log ε): 204 (4.08), 233 (4.45), 274 (3.98), 283 (3.92), 303 (3.55), 314 (3.44) [1]

FAB-MSm/z: 545 [M-H], 383 [M-H-162] [1]

HR-FAB-MSm/z: 669 [M + Na]+, 384 [M-C6H10O5]+ [1]

1H NMR (J/Hz): 6.56 (s, H-1), 6.89 (d, J = 10, H-6), 5.82 (dd, J = 6, 10, H-7), 2.56 (d, J = 6, H-8), 2.55, 3.07 (dd, J = 15, H2-12), 1.45 (dd, J = 2, 14), 2.14 (dd, J = 10, 14, H2-15), 4.84 (ddd, J = 2, 7, 10, H-16), 3.10 (d, J = 7, H-17), 0.74 (s, CH3-18), 1.23 (s, CH3-19), 2.16 (s, CH3-21), 2.23 (s, CH3-28), 0.96 (s, CH3-30)

β-D-Glcp: 4.61 (d, J = 7, H-1), 3.40–3.55 (H-2, 3, 4), 3.31 (m, H-5), 3.83 (dd, J = 4, 12, Ha-6), 3.95 (dd, J = 2, 12,...

References

  1. 1.
    E. Himeno, T. Nagao, J. Honda, H. Okabe, N. Irino, T. Nakasumi, Chem. Pharm. Bull. 42(11), 2370 (1994)CrossRefGoogle Scholar

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