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Compound 2 from Alternanthera repens

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – 2α-Hyrdoxy-30-nor-ursolic Acid

Biological source: Alternanthera repens [1]

C52H82O21: 1042.534

[α]D25 + 19.0° (c 1.0, MeOH) [1]

FAB-MS (negative) m/z: 1041 [M-H], 895 [M–H-146], 763 [M-H-(146 + 132)], 631 [M-H-(146 + 132 + 132)], 469 [M-H-(146 + 132 + 132 + 162] [1]

1H NMR (599.19 MHz, J/Hz, CD3OD): 1.20 (dd, J = 4.0, 11.0, H-1), 1.96 (dd, J = 12.5, 4.0, H-1), 3.84 (ddd, J = 10.0, 12.5, 4.0, H-2), 3.10 (d, J = 10.0, H-3), 0.90 (brdd, J = 9.0, H-5), 1.25, 1.48 (m, H2-6), 1.26, 162 (m, H2-7), 1.54 (brs, H-9), 1.90 (m, H-11), 5.28 (m, H-12), 1.08, 1.85 (m, H2-15), 1.80. 155 (m, H2-16), 2.42 (d, J = 13.0, H-18), 2.38 (dd, J = 13.0, 6.4, H-19), 1.60 (t, J = 12.5, H-21), 2.0 (m, H-21), 1.81, 1.52 (H2-22), 1.0 (s, CH3-23), 0.90 (s, CH3-24), 1.02 (s, CH3-25), 0.87 (s, CH3-26), 1.22 (s, CH3-27), 0.98 (d, J = 6.4, CH3-29), 4.70, 4.76 (brs, CH2-30)...

References

  1. 1.
    R. Sanoko, G. Speranza, C. Pizza, N. De Tommasi, Phytochemistry 51, 1043 (1999)CrossRefGoogle Scholar

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