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Gymnemasaponin V

Reference work entry

CAS Registry Number: 133629-84-2 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]

C54H90O24: 1122.582

Mp: 186–188°C [1]

[α]D + 6.2° (c 1.9, MeOH) [1]

FAB-MSm/z: 1145 [M + Na]+ [1]

1H NMR (J/Hz, C5D5N): β-D-Glcp: 4.84 (d, J = 8.5, H-1); β-D-Glcp′: 4.87 (d, J = 8.5, H-1); β-D-Glcp″: 5.06 (d, J = 8.0, H-1); β-D-Glcp″′: 5.10 (d, J = 8.0, H-1) [1]

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

Table 1

C-2

27.4

Glc-1

105.4

Glc′-1

104.9

Glc″-1

105.9

Glc″′-1

105.4

3

72.1

2

75.2

2

74.6

2

75.2

2

74.8

4

43.0

3

78.6

3

78.4

3

78.5

3

78.4

15

36.9

4

71.6

4

71.6

4

71.6

4

71.3

16

66.3

5

77.2

5

78.4

5

77.3

5

78.4

17

41.4

6

70.2

6

62.7

6

69.8

6

62.7

23

75.1

               

24

13.3

               

28

77.9

               

References

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

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