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Gymnemasaponin I

Reference work entry

CAS Registry Number: 133629-80-8 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]

C36H60O9: 636.423

Mp: 184–185°C [1]

[α]D + 9.3° (c 3.5, MeOH) [1]

FAB-MSm/z: 659 [M + 2Na]+ [1]

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

13 C NMR (100 MHz, C 5D 5N): [ 1]

Table 1

C-2

27.7

Glc-1

105.8

3

73.4

2

75.0

4

42.9

3

78.7

15

37.0

4

71.7

16

66.3

5

78.6

17

41.3

6

62.8

23

67.9

   

24

13.1

   

28

78.0

   

References

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

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© Springer Science+Business Media New York 2013

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