Advertisement

Gymnemasaponin II

Reference work entry

CAS Registry Number: 133629-81-9 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – 23-Hydroxy-longispinogenin

Biological source: Gymnema sylvestre [1]

C47H70O14: 858.476

Mp: 190–192°C [1]

[α]D + 1.9° (c 2.6, MeOH) [1]

FAB-MSm/z: 821 [M + 2Na]+ [1]

1H NMR (J/Hz, C5D5N): β-D-Glcp: 4.92 (d, J = 8.0, H-1);

β-D-Glcp′: 4.95 (d, J = 8.0, H-1) [1]

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

Table 1

C-2

27.4

Glc-1

105.8

Glc′-1

105.2

3

72.3

2

75.0

2

75.3

4

42.9

3

78.7

3

78.7

15

36.9

4

71.7

4

71.8

16

66.1

5

78.7

5

78.4

17

41.3

6

62.8

6

63.0

23

75.0

       

24

13.2

       

28

78.0

       

References

  1. 1.
    K. Yoshikawa, S. Arihara, K. Matsuura, Tetrahedron Lett. 32, 789 (1991)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Personalised recommendations