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Compound 4 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]

C58H94O26: 1206.603

[α]D25 + 35° (c 1.0, MeOH) [1]

FAB-MS (positive ion mode) m/z: 1205 [M-H] [1]

1H NMR (600 MHz, J/Hz, CD3OD): 0.72 (s, CH3-24), 0.84 (s, CH3-25), 0.97 (d, J = 6.2, CH3-29), 0.98 (m, Hb-1), 0.98 (m, Hb-16), 1.00 (s, CH3-26), 1.05 (m, H-15), 1.09 (s, CH3-30), 1.10 (m, Ha-15), 1.15 (m, Ha-16), 1.19 (s, CH3-27), 1.35 (m, Hb-21), 1.36 (m, Hb-7), 1.38 (m, Hb-6), 1.40 (m, H-19), 1.48 (m, Ha-6), 1.59 (m, Ha-21), 1.61 (m, Hb-2), 1.62 (s, H-9), 1.63 (m, Ha-1), 1.66 (s, H-5), 1.70 (s, H-22), 1.70 (m, Hb-7), 1.92 (m, Ha-2), 2.03 (m, Hb-11), 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 (s, H-12); α-L-Arap: 4.36 (d, J = 7.0, H-1), 3.73 (dd, J = 7.0,...

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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