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Ilexsaponin A1

Reference work entry

CAS Registry Number: 108524-93-2 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – Ilexgenin A

Biological source: Ilex pubescens [1]

C36H56O11: 664.382

[α]D20 + 25.5° (c 0.69, C5D5N) [1]

IR (nujol) νmax cm−1: 3400, 1720, 1685 [1]

EI-MSm/z (acetate): 331 [Glc(Ac)4]+ [1]

1H NMR (100 MHz, J/Hz, C5D5N): 1.18, 1.29, 1.44 (s, CH3 × 3), 1.73 (s, CH3 × 2), 1.09 (d, J = 6.1), 2.97 (s, H-18), 3.30 (dd, J = 4.0, 11.0, H-3), 5.21 (brs, HO-19), 5.61 (brt, H-12), 6.29 (d, J = 6.8, H-1 of Glc) [1]

13 C NMR (25.15 MHz, C 5D 5N): [ 1]

Table 1

C-1

39.7

C-17

48.6

Glc-1

95.7

2

29.0

18

54.4

2

73.8

3

78.3

19

72.6

3

78.7

4

49.1

20

42.1

4

71.1

5

56.9

21

26.6

5

79.1

6

21.0

22

37.8

6

62.2

7

33.8

23

24.4

   

8

40.3

24

181.0

   

9

47.1

25

13.9

   

10

37.8

26

17.3

   

11

24.4

27

24.7

   

12

128.4

28

177.1

   

13

139.2

29

27.0

   

14

42.1

30

16.7

   

15

29.1

       

16

26.0

       

References

  1. 1.
    K. Hidaka, M. Ito, Y. Matsuda, H. Kohda, K. Yamasaki, J. Yamahara, Phytochemistry 26, 2023 (1987)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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