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Gymnemaside V

Reference work entry

CAS Registry Number: 141358-48-7 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 19-Oxo-dammar-24-en-3β,20(S)-diol

Biological source: Gymnema sylvestre

C53H88O22: 1076.576

Mp: 187189°C [1]

[α]D + 5.9° (c 5.0, MeOH) [1]

IR (KBr) νmax cm−1 : 3400, 1700, 1630 [1]

FAB-MSm/z: 1099 [M + Na]+ [1]

1H NMR (400 MHz, J/Hz, C5D5N): 0.90, 0.99, 1.04, 1.31, 1.48, 1.70, 1.72 (s, CH3 × 7), 3.34 (dd, J = 11.5, 4.0, H-3), 5.36 (s, H-24), 10.30 (s, CHO-19), 4.89 (d, J = 7.5, H-1 of Glc), 4.91 (d, J = 7.5, H-1 of Glc″), 4.98 (d, J = 7.5, H-1 of Xyl), 5.31 (d, J = 8.0, H-1 of Glc′)

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

Table 1

C-1

33.5

16

28.0

Glc-1

105.0

Glc″-1

98.7

2

27.7

17

48.5

2

83.6

2

75.5

3

87.8

18

15.9

3

78.2

3

79.1

4

40.1

19

205.9

4

71.8

4

71.7

5

54.7

20

82.3

5

78.3

5

76.6

6

17.8

21

21.4

6

62.8

6

70.5

7

34.8

22

40.1

Glc′-1

106.1

Xyl-1

105.9

8

40.5

23

23.3

2

77.1

2

74.8

9

52.8

24

126.2

3

78.2

3

77.9

10

References

  1. 1.
    K. Yoshikawa, S. Arihara, K. Matsuura, T. Miyase, Phytochemistry 31(1), 237 (1992)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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