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Sandosaponin A

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – Soyasapogenol E

Biological source: Phaseolus vulgaris [1]

C48H76O19: 956.498

Mp: 200–201°C (H2O–MeOH) [1]

[α]D23 −5.8° (c 0.8, MeOH) [1]

IR (KBr) νmax cm−1: 3411, 2926, 1736, 1701, 1076 [1]

FAB-MS (positive ion mode) m/z: 979.4878 (M + Na)+ [1]

FAB-MSm/z: 955 [M-H], 793 [M-C6H4O5] [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.72, 0.85, 0.86, 0.96, 1.17, 1.28, 1.43 (s, CH3-25, 30, 26, 29, 28, 27, 23), 2.15, 2.60 (d, J = 13.7, H2-21), 3.41 (dd, J = 3.7, 12.2, H-3), 5.23 (brs, H-12)

β-D-GlcUAp: 5.10 (d, J = 7.6, H-1)

β-D-Galp: 5.65 (d, J = 7.6, H-1)

β-D-Glcp: 5.20 (d, J = 7.6, H-1) [1]

13 C NMR (125 MHz, C 5D 5N): [ 1]

Table 1

C-1

38.5

C-16

27.4

GlcUA-1

104.8

Glc-1

106.9

2

27.4

17

47.8

2

80.9

2

76.7

3

90.7

18

47.6

3

77.5

3

78.0

4

43.9

19

46.6

4

72.5

4

71.6

5

56.1

20

34.1

5

77.9

5

79.1

6

18.6

21

50.9

6

172.4

6

62.9

7

33.0

22

215.6

Gal-1

103.0

   

8

39.8...

References

  1. 1.
    M. Yoshikawa, H. Shimada, H. Komatsu, T. Sakurama, N. Nishida, J. Yamahara, H. Shimoda, H. Matsuda, T. Tani, Chem. Pharm. Bull. 45(5), 877 (1997)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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