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Compound 2 from Picrorhiza kurrooa

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 2β,16α,20,22-Tetrathydroxy-9-methyl-19-norlanosta-5,24-diene-3,11-dione

Biological source: Picrorhiza kurrooa [1]

C36H56O11: 664.382

Mp: 153–154°C [1]

UV λmax nm: 200, 230 [1]

FAB-MSm/z: 671 [M + Li]+, 663 [M-H] [1]

1H NMR (300 MHz, J/Hz, CD3OD): 2.28 (ddd, J = 12.8, 3.3, 5.6, Ha-1), 1.43 (ddd, J = 12.8, Hb-1), 4.98 (dd, J = 12.8, 5.6, 2.0, H-2), 5.91 (brd, J = 5.6, H-6), 2.54 (ddd, Ha-7), 2.13 (brdd, J = 20.5, 6.0, Hb-7), 2.08 (d, J = 7.8, H-8), 3.12 (brd, J = 12.8, H-10), 3.43 (d, H-12), 2.67 (d, J = 14.7, H-12), 1.98 (dd, J = 13.4, 8.9, H-15), 1.60 (d, J = 13.4, H-15), 4.68 (brt, J = 8.9, 6.9, H-16), 2.52 (d, J = 6.9, H-17), 3.48 (d, J = 10.0, 3.3, H-22), 2.35 (brdd, J = 14.5, 6.7, H-23), 2.26 (dd, H-23), 5.35 (brd, J = 7.1, H-24), 1.78 (s, CH3-26), 1.71 (s, CH3-27), 1.48, 1.40, 1.36, 1.33, 1.12, 1.05 (s, CH3× 6); β-D-Glcp: 4.41 (d, J = 7.8,...

References

  1. 1.
    H. Stuppner, H. Kählig, O. Seligmann, H. Wagner, Phytochemistry 29, 1633 (1990)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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