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Compound 8 from Picrorhiza kurrooa

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 2β,3β,16α,20,25-Pentahydroxy-9-methyl-19-norlanosta-5-en-22-one

Biological source: Picrorhiza kurrooa [1]

C45H66O12: 798.455

Mp: 102–104°C [1]

UV λmax nm: 200, 300 [1]

FAB-MSm/z: 837 [M + K]+, 821 [M + Na]+, 805 [M + Li]+, 131 [1]

1H NMR (300 MHz, J/Hz, CD3OD-CDCl3): 1.75 (ddd, Ha-1), 2.5, 4.17 (ddd, H2-2), 3.66 (d, H-3), 5.65 (brd, H-6), 1.84 (ddd, Ha-7), 2.46 (brdd, Hb-7), 1.83 (brd, H-8), 2.43 (H-10), 1.29 (d, Ha-15), 1.75 (dd, Hb-15), 4.36 (brt, H-16), 2.39 (d, H-17), 2.68 (ddd, Ha-23), 2.90 (ddd, Hb-23), 1.06 (H-18), 0.99 (s, CH3-19), 1.39 (d, CH3-21), 1.25 (s, CH3-26), 1.25 (s, CH3-27), 1.07 (s, CH3-28), 1.25 (CH3-29), 1.11 (s, CH3-30)

β-D-Glcp: 4.54 (d, H-1), 4.64, 4.49 (dd, H2-6)

Cinnamoyl: 7.79 (d, H-1′), 6.58 (d, H-2′), 7.47 (d, H-2″, 6″), 7.62 (dd, 3″, 5″), 7.47 (dd, H-4″) [1]

13 C NMR (75.5 MHz, CD 3OD-CDCl 3): [ 1]

Table 1

C-1

28.69

C-16

71.58

References

  1. 1.
    H. Stuppner, E.P. Muller, H. Wagner, Phytochemistry 30, 305 (1991)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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