Advertisement

Ilexoside A

Reference work entry

CAS Registry Number: 108529-23-3 Open image in new window

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

Biological source: Ilex chinensis [1]

C35H56O8: 604.397

Mp: 264–267°C (MeOH) [1]

[α]D19 + 7.8° (c 0.20, MeOH) [1]

IR (KBr) νmax cm−1: 1675, 1190, 1155, 1040 [1]

FD-MSm/z: 627 (M + Na, 56 ), 605 (M++H, 100), 559 (39), 473 (M++H-132, 5) [1]

1H NMR (400 MHz, J/Hz, C5D5N): 0.89, 1.00, 1.06, 1.14, 1.22, 1.32, 1.69 (s, CH3 × 7), 3.36 (dd, J = 11.8, 4.3, Hα-3), 3.65 (m, Hβ-19), 5.57 (m, H-12)

β-D-Xylp: 4.86 (d, J = 7.5, H-1), 4.04 (dd, J = 8.7, 7.5, H-2), 4.19 (t, J = 8.7, H-3), 4.25 (ddd, J = 10.1, 8.7, 4.9, H-4), 3.82 (dd, J = 11.1, 10.1, Ha-5), 4.42 (dd, J = 11.1, 4.9, Hb-5) [1]

13 C NMR (100.5 MHz, C 5D 5N) (methyl derivate):

Table 1

C-1

38.64

C-17

46.40

Xyl-1

107.70

2

26.72

18

44.66

2

75.53

3

88.70

19

80.98

3

78.58

4

39.61

20

35.61

4

71.23

5

56.00

21

28.95

5

67.12

6

18.65

22

33.27

   

7

33.19

References

  1. 1.
    A. Inada, M. Kobayashi, H. Murata, T. Nakanishi, Chem. Pharm. Bull. 35, 841 (1987)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Personalised recommendations