Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 25-Acetoxy-2β,3β,16α,20-tetrahydroxy-9-methyl-19-norlanosta-5,23-dien-22-one
C38H60O12: 708.408
Mp: 127–137°C [2]
IR (nujol) νmax cm−1: 3380, 1720, 1690, 1265 [2]
1 H NMR (220 MHz, J/Hz, CD3OD): 1.02, 1.11, 1.11, 1.19, 1.27, 1.48, 1.62, 1.64 (s, CH3 × 8), 1.85 (cm), 2.09 (OAc), 2.5 (cm, 3 H), 3.3–5.2 (cm), 5.7 (brs, H-6), 6.79 (d, J = 17.5, H-23), 7.08 (d, H-24)
β-D-Glcp: 4.52 (d, H-1), 3.99, 3.76 (dd, H-6) [1]
13 C NMR (75 MHz, CD3OD): [1]
Table 1
C-1 |
28.94 |
C-16 |
72.56 |
Glc-1 |
102.02 |
2 |
77.62 |
17 |
60.62 |
2 |
75.22 |
3 |
77.11 |
18 |
19.21 |
3 |
78.10 |
4 |
42.24 |
19 |
28.40 |
4 |
71.75 |
5 |
141.73 |
20 |
81.07 |
5 |
77.92 |
6 |
121.53 |
21 |
25.11 |
6 |
62.90 |
7 |
25.27 |
22 |
205.43 |
Ac-1 |
172.11 |
8 |
44.12 |
23 |
122.92 |
2 |
21.84 |
9 |
35.46 |
24 |
151.12 |
||
10 |
38.10 |
25 |
80.83 |
||
11 |
32.73 |
26 |
26.52 |
||
12 |
31.41 |
27 |
26.84 |
||
13 |
49.51 |
28 |
27.44 |
||
14 |
49.75 |
29 |
26.18 |
||
15 |
46.94 |
30 |
18.72 |
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References
H. Stuppner, E.P. Muller, H. Wagner, Phytochemistry 30, 305 (1991)
W.A. Laurie, D. McHale, I.B. Sheridan, Phytochemistry 24, 2659 (1985)
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(2013). Compound 1. In: Azimova, S.S. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0541-2_1439
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