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Compound 1

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 25-Acetoxy-2β,3β,16α,20-tetrahydroxy-9-methyl-19-norlanosta-5,23-dien-22-one

Biological source: Picrorhiza kurrooa [1, 2]

C38H60O12: 708.408

Mp: 127–137°C [2]

IR (nujol) νmax cm−1: 3380, 1720, 1690, 1265 [2]

1H NMR (220 MHz, J/Hz, CD3OD): 1.02, 1.11, 1.11, 1.19, 1.27, 1.48, 1.62, 1.64 (s, CH3 × 8), 1.85 (cm), 2.09 (OAc), 2.5 (cm, 3 H), 3.3–5.2 (cm), 5.7 (brs, H-6), 6.79 (d, J = 17.5, H-23), 7.08 (d, H-24)

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

13 C NMR (75 MHz, CD 3OD): [ 1]

Table 1

C-1

28.94

C-16

72.56

Glc-1

102.02

2

77.62

17

60.62

2

75.22

3

77.11

18

19.21

3

78.10

4

42.24

19

28.40

4

71.75

5

141.73

20

81.07

5

77.92

6

121.53

21

25.11

6

62.90

7

25.27

22

205.43

Ac-1

172.11

8

44.12

23

122.92

2

21.84

9

35.46

24

151.12

   

10

38.10

25

80.83

   

11

32.73

26

26.52

   

12

31.41

27

26.84

   

13

49.51

28

27.44

   

14

49.75

29

26.18

   

15

46.94

30

18.72

 

References

  1. 1.
    H. Stuppner, E.P. Muller, H. Wagner, Phytochemistry 30, 305 (1991)CrossRefGoogle Scholar
  2. 2.
    W.A. Laurie, D. McHale, I.B. Sheridan, Phytochemistry 24, 2659 (1985)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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