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Compound 5 from Picrorhiza kurrooa

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 2β,3β,16α,20-Tetrahydroxy-9-methyl-19-norlanosta-5,24-dien-22-one

Biological source: Picrorhiza kurrooa [1]

C36H56O10: 648.387

Mp: 149–152°C [1]

UV λmax nm: 200, 230 [1]

FAB-MSm/z: 657 [M + Li]+, 653 [M + H]+, 635 [M + H-H2O]+ [1]

1H NMR (300 MHz, J/Hz, CD3OD): 1.74, 2.52 (ddd, H2-1), 4.28 (ddd, H-2), 3.69 (d, H-3), 5.66 (brd, H-6), 1.86 (ddd, Ha-7), 2.47 (brdd, Hb-7), 1.87 (brd, H-8), 2.52 (H-10), 1.32 (d, H-15), 4.50 (brt, H-16), 2.44 (d, H-17), 5.36 (brt, H-24), 1.14 (H-18), 1.03 (s, CH3-19), 1.45 (d, CH3-21), 1.80 (s, CH3-26), 1.70 (s, CH3-27), 1.12 (s, CH3-28), 1.27 (s, CH3-29), 1.20 (s, CH3-30)

β-D-Glcp: 4.52 (d, H-1), 3.98, 3.76 (dd, H2-6) [1]

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

Table 1

C-1

28.96

C-16

72.09

Glc-1

102.03

2

77.61

17

60.18

2

75.23

3

77.13

18

19.24

3

78.12

4

42.25

19

28.41

4

71.78

5

141.73

20

81.32

5

77.92

6

121.55

21

25.5

6

62.86

7

25.26

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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