Advertisement

Wistariasaponin B2

Reference work entry

CAS Registry Number: 126594-46-5 Open image in new window

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

Biological source: Wisteria brachybotrys [1], Abrus cantoniensis [2]

C48H78O19: 958.513

[α]D20 −7.9° (c 1.21, MeOH) [1]

IR (KBr) νmax cm−1: 3400–3600, 1710 [1]

FAB-MSm/z: 957 [M-H], 811 [M-Rha-H], 649 [M-H-Rha-Gal] [2]

1H NMR (400 MHz, J/Hz, C5D5N) (Me ester): 0.70, 0.94, 1.18, 1.23, 1.31, 1.44 (s, CH3 × 6), 5.29 (t-like, H-12)

β-D-GlcUAp: 4.97 (d, J = 7.8, H-1), 3.76 (s, COOMe)

β-D-Galp: 5.78 (d, J = 7.3, H-1)

α-L-Rhap: 6.29 (d, J = 1.2, H-1), 1.77 (d, J = 5.9, CH3-6) [1]

13 C NMR (75 MHz, C 5D 5N) (Me ester): [ 1]

Table 1

C-1

38.66

C-16

28.66

GlcUA-1

105.48

Rha-1

102.41

2

26.64

17

38.04

2

78.09

2

72.35

3

91.33

18

45.10

3

76.43

3

72.68

4

43.89

19

42.05

4

72.65

4

74.35

5

56.08

20

35.87

5

76.55

5

69.28

6

18.51

21

38.60

6

170.39

6

18.95

7

33.28

22

75.20

COOMe

52.18

   

8

39.90

23

22.95

Gal-1...

References

  1. 1.
    T. Konoshima, M. Kozuka, M. Haruna, K. Ito, T. Kimura, H. Tokuda, Chem. Pharm. Bull. 37(10), 2731 (1989)CrossRefGoogle Scholar
  2. 2.
    H. Miyao, Y. Sakai, T. Takeshita, J. Kinjo, T. Nohara, Chem. Pharm. Bull. 44(6), 1222 (1996)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Personalised recommendations