Compound 6 from Picrorhiza kurrooa

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 2β,3β,16α-Trihydroxy-4,4,9,14-tetramethyl-19-norpregn-5-en-20-one

Biological source: Picrorhiza kurrooa [1]

C30H48O9: 552.329

Mp: 168–169°C [1]

UV λmax nm: 200 [1]

FAB-MSm/z: 659 [M + Li]+ [1]

1H NMR (300 MHz, J/Hz, CD3OD): 1.75, 2.59 (ddd, J = 11.9, H2-1), 4.29 (ddd, J = 11.9, H-2), 3.66 (d, H-3), 5.68 (brd, H-6), 1.92 (ddd, Ha-7), 2.53 (brdd, Hb-7), 1.86 (brd, H-8), 2.58 (H-10), 1.42 (d, Ha-15), 1.89 (dd, Hb-15), 4.93 (brt, H-16), 3.09 (d, H-17), 0.88 (CH3-18), 1.04 (s, CH3-19), 2.2 (d, CH3-21), 1.13 (s, CH3-28), 1.28 (s, CH3-29), 1.22 (s, CH3-30)

β-D-Glcp: 4.52 (d, H-1), 3.99, 3.76 (dd, H2-6) [1]

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

Table 1

C-1

28.34

C-16

72.75

Glc-1

102.06

2

77.57

17

69.64

2

75.23

3

77.13

18

19.24

3

78.12

4

42.27

19

29.0

4

71.79

5

141.73

20

211.83

5

77.92

6

121.33

21

31.86

6

62.89

7

25.35

28

27.41

   

8

44.60

29

26.19

   

9

35.75

30

18.65

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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