Kudzusaponin A1

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

Biological source: Pueraria lobata [1]

C52H84O23: 1076.540

[α]D25 + 3.0 (c 0.75, C5H5N:H2O 1:1) [1]

FAB-MS (positive ion mode) m/z: 1099.5301 (M + Na)+, 645 (M + Na-Rha-Ara-GlcUA)+ [1]

MS/MSm/z: 513 ([M + Na-Rha-Ara-GlcUA-Xyl]+), 421 ([D/E ring + Xyl + Na]+) [1]

1H NMR (270 MHz, J/Hz, C5D5N): 0.68, 0.92, 1.37, 1.39, 1.41, 1.43 (CH3 × 6), 5.35 (s, H-12) [1]

α-L-Rhap: 6.17 (s, H-1), 1.80 (d, J = 6.0, CH3-6) [1]

13 C NMR (C 5D 5N):

Table 1

C-1

38.7

C-16

27.7

GlcUA-1

105.5

Rha-1

102.4

2

26.7

17

39.3

2

77.7

2

72.3

3

91.1

18

43.8

3

75.6

3

72.5

4

43.9

19

40.9

4

73.9

4

73.8

5

56.1

20

41.5

5

77.4

5

69.4

6

18.6

21

69.8

6

172.4

6

18.9

7

32.9

22

93.1

Ara-1

102.0

Xyl-1

108.7

8

40.2

23

23.2

2

76.8

2

74.3

9

47.8

24

63.4

3

75.2

3

78.0

10

36.5

25

15.8

4

70.5

4

70.5

11

24.1

26

16.8

5

67.0

5

67.7

12

122.5

27

26.8

       

13

144.6

28

22.9

   

References

  1. 1.
    T. Arao, J. Kinjo, T. Nohara, R. Isobe, Chem. Pharm. Bull. 45(2), 362 (1997)CrossRefGoogle Scholar

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