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Sandosaponin B

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

Biological source: Phaseolus vulgaris [1]

C48H76O19: 956.498

Mp: 212–213°C (H2O–MeOH) [1]

[α]D28 + 34.8° (c 0.3, MeOH) [1]

IR (KBr) νmax cm−1: 3410, 2924, 1736, 1725, 1076 [1]

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

FAB-MSm/z: 955 [M-H], 793 [M-C6H11O5], 631 [M-C12H21O10] [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.73, 0.91, 0.97, 1.18, 1.21, 1.26, 1.62 (s, CH3-25, 26, 29, 28, 27, 30, 23), 3.53 (dd, J = 5.2, 11.9, H-3), 3.71 (dd, J = 3.5, 6.6, H-22), 5.27 (brs, H-12), 10.44 (s, CHO-24)

β-D-GlcUAp: 5.08 (d, J = 7.9, H-1)

β-D-Galp: 5.31 (d, J = 7.6, H-1)

β-D-Glcp: 5.22 (d, J = 7.6, H-1) [1]

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

Table 1

C-1

38.0

C-16

28.6

GlcUA-1

104.5

Glc-1

106.6

2

27.1

17

38.0

2

84.0

2

76.6

3

86.7

18

45.4

3

77.2

3

77.8

4

53.2

19

46.8

4

71.9

4

71.1

5

57.2

20

30.9

5

77.4

5

79.2

6

19.1

21

42.2

6

172.3

6

62.6...

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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