Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – Ilexosapogenin A
Biological source: Ilex rotunda Thunb. [1]
C42H66O16: 826.435
[α] 22D −0.6° (c 3.2, MeOH) [1]
FAB-MS m/z: 825 [M-H]− [1]
EI-MS m/z: 470 (5), 442 (22), 370 (8), 264 (25), 246 (54), 224 (15), 218 (33), 206 (31), 201 (50), 175 (46), 146 (100) [1]
1 H NMR (400 MHz, J/Hz, C5D5N): 0.95, 0.97, 0.98, 1.15, 1.15, 1.60 (s, CH3 × 6), 3.51 (brs, H-18), 3.55 (d, J = 2, H-19), 5.49 (brt, H-12)
β-D-GlcUAp: 5.29 (d, J = 8, H-1)
β-D-Glcp: 6.36 (d, J = 8, H-1) [1]
13 C NMR (100 MHz, C5D5N): [1]
Table 1
C-1 |
38.5 |
C-16 |
29.1 |
GlcUA-1 |
106.3 |
2 |
26.1 |
17 |
46.5 |
2 |
75.5 |
3 |
82.1 |
18 |
44.6 |
3 |
78.0 |
4 |
43.6 |
19 |
81.0 |
4 |
73.5 |
5 |
48.4 |
20 |
35.6 |
5 |
78.1 |
6 |
18.4 |
21 |
29.0 |
6 |
172.9 |
7 |
32.9 |
22 |
33.1 |
Glc-1 |
95.9 |
8 |
40.3 |
23 |
64.5 |
2 |
74.1 |
9 |
47.7 |
24 |
13.6 |
3 |
79.0 |
10 |
37.1 |
25 |
16.1 |
4 |
71.1 |
11 |
24.2 |
26 |
17.7 |
5 |
79.3 |
12 |
123.4 |
27 |
24.7 |
6 |
62.2 |
13 |
144.4 |
28 |
177.3 |
||
14 |
42.1 |
29 |
28.8 |
||
15 |
28.0 |
30 |
25.0 |
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References
K. Amimoto, K. Yoshikawa, S. Arihara, Chem. Pharm. Bull. 41(1), 77 (1993)
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(2013). Ilexoside XLVI. In: Azimova, S.S. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0541-2_981
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