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Ginsenoside-Rg7 (Ginsenoside Ib)

Reference work entry

CAS Registry Number: 215720-23-3 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 3β,12β,20(S),24(R)-Tetrahydroxy-dammar-25-ene

Biological source: Panax ginseng [1]

C42H72O14: 800.492

Mp: 187–188°C [1]

FAB-MSm/z: 823 [M + Na]+, 800 [M]+, 642 [M + Na-Glc-H2O]+, 420 [M-2Glc-3H2O]+

1H NMR (500 MHz, J/Hz, C5D5N): β-D-Glcp: 4.93 (d, J = 7.3, H-1); β-D-Glcp′: 5.22 (d, J = 7.9, H-1) [1]

13 C NMR (C 5D 5N): [ 1]

Table 1

C-1

39.2

C-16

26.8

Glc-1

107.0

2

26.8

17

52.4

2

75.8

3

88.8

18

16.3

3

78.8

4

39.7

19

15.9

4

72.0

5

56.4

20

83.3

5

78.7

6

18.3

21

22.8

6

63.2

7

35.1

22

32.8

Glc′-1

98.4

8

40.0

23

31.1

2

75.4

9

50.2

24

76.2

3

79.0

10

37.0

25

149.4

4

71.8

11

30.9

26

110.2

5

78.4

12

70.3

27

18.5

6

63.1

13

49.4

28

28.2

   

14

51.5

29

16.8

   

15

31.1

30

17.3

   

References

  1. 1.
    D.-Q. Dou, Y.-J. Chen, L.-H. Liang, F.-G. Pang, N. Shimizu, T. Takeda, Chem. Pharm. Bull. 49(4), 442 (2001)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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