Advertisement

Ilexoside XLI

Reference work entry

Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – Rotundic Acid

Biological source: Ilex rotunda [1]

C42H68O15: 812.455

Mp: 198–200°C (MeOH) [1]

[α]D22 + 47.0° (c 0.6, MeOH) [1]

FAB-MSm/z: 811 [M-H], 649 [M-H-Glc], 487 [M-H-2Glc] [1]

1H NMR (600 MHz, J/Hz, C5D5N) : 1.07, 1.08, 1.24, 1.43, 1.65 (s, CH3 × 5), 1.04 (d, J = 6.5, CH3), 2.48 (dt, J = 14.0, 3.0, Hβ-15), 2.96 (s, H-18), 3.02 (dt, J = 14.0, 3.0, Hα-16), 3.70, 4.17 (d, J = 10.5, H2-23), 5.57 (brt, H-12)

β-D-Glcp: 6.24 (d, J = 6.5, H-1)

β-D-Glcp′: 5.44 (d, J = 3.5, H-1) [1]

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

Table 1

C-1

38.9

C-16

26.0

Glc-1

95.6

2

27.7

17

48.7

2

73.8

3

73.6

18

54.3

3

78.9

4

42.9

19

72.6

4

71.7

5

48.6

20

42.0

5

77.1

6

18.8

21

26.7

6

68.1

7

38.2

22

37.7

Glc′-1

100.5

8

40.6

23

67.8

2

74.1

9

47.8

24

13.1

3

75.5

10

37.2

25

16.1

4

72.0

11

24.1

26

17.5

5

74.0

12

128.4

27

24.6

6

62.6

13

139.3

28

177.1

   

14

42.1

29

26.9

   

15...

References

  1. 1.
    K. Amimoto, K. Yoshikawa, S. Arihara, Chem. Pharm. Bull. 41(1), 39 (1993)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Personalised recommendations