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Compound 5 from Tupidanthus calyptratus

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – 2α,3β,20β,23-Tetrahydroxy-urs-12-en-28-oic Acid

Biological source: Tupidanthus calyptratus [1]

C52H84O22: 1060.545

[α]D25 + 27° (c 1.0, MeOH) [1]

FAB-MSm/z: 1059 [M-H] [1]

1H NMR (600 MHz, J/Hz, CD3OD): 0.74 (s, CH3-24), 0.83 (s, CH3-25), 0.95 (m, Hb-1), 0.95 (m, Hb-16), 0.96 (d, J = 6.2, CH3-29), 1.00 (s, CH3-26), 1.09 (m, Hb-15), 1.09 (s, CH3-30), 1.13 (m, Ha-16), 1.20 (s, CH3-27), 1.31 (brd, J = 11.0, H-5), 1.35 (m, Hb-7), 1.38 (m, Hb-6), 1.40 (s, H-19), 1.45 (m, Hb-21), 1.50 (m, Ha-6), 1.51 (m, Ha-21), 1.64 (s, H-9), 1.67 (m, Hb-22), 1.70 (s, Ha-22), 1.70 (m, Ha-7), 1.92 (m, Ha-2), 2.09 (m, Ha-11), 2.28 (d, J = 13.0, H-18), 3.20 (d, J = 11.0, Hb-23), 3.64 (dd, J = 11.0, 4.5, H-3), 3.65 (d, J = 11.0, Ha-23), 5.28 (m, H-12)

α-L-Arap: 4.34 (H-1), 3.75 (H-2), 3.87 (H-3), 3.88 (H-4), 3.92, 3.62 (H2-5)

β-D-Glcp: 5.40 (H-1), 3.36 (H-2),...

References

  1. 1.
    G. Cioffi, A. Bellino, C. Pizza, F. Venturella, N. De Tommasi, J. Nat. Prod. 64(6), 750 (2001)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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