CAS Registry Number: 141380-42-9
Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 25-Hydroperoxy-dammar-23-en-2α,3β,12β,20(S)-tetraol
Biological source: Gymnema sylvestre [1]
C41H70O15: 802.471
Mp: 185–187°C [1]
[α]D −7.7° (C 1.4, MeOH) [1]
FAB-MS m/z: 826 [M + Na + H]+ [1]
1 H NMR (400 MHz, J/Hz, C5D5N): 0.87, 0.99, 1.04, 1.09, 1.26, 1.61, 1.67, 1.62, (s, CH3 × 7), 3.40 (dd, J = 11.5, 4.0, H-3), 6.13 (d, J = 15.5, H-24), 6.20 (ddd, J = 15.5, 8.0, 4.5, H-23), 4.96 (d, J = 7.5, H-1 of Xyl), 5.16 (d, J = 8.0, H-1 of Glc) [1]
13 C NMR (100 MHz, C5D5N): [1]
Table 1
C-1 |
48.4 |
C-11 |
30.6 |
C-21 |
23.1 |
Glc-1 |
98.2 |
Xyl-1 |
105.6 |
2 |
68.8 |
12 |
70.3 |
22 |
38.0 |
2 |
75.0 |
2 |
74.8 |
3 |
83.7 |
13 |
49.7 |
23 |
126.8 |
3 |
79.0 |
3 |
78.0 |
4 |
40.0 |
14 |
51.5 |
24 |
140.1 |
4 |
71.6 |
4 |
71.1 |
5 |
56.5 |
15 |
31.1 |
25 |
81.4 |
5 |
76.8 |
5 |
67.0 |
6 |
18.8 |
16 |
26.4 |
26 |
25.1 |
6 |
70.0 |
||
7 |
35.1 |
17 |
51.8 |
27 |
25.4 |
||||
8 |
40.2 |
18 |
16.1 |
28 |
29.2 |
||||
9 |
50.3 |
19 |
17.3 |
29 |
17.6 |
||||
10 |
38.6 |
20 |
83.2 |
30 |
17.5 |
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References
K. Yoshikawa, S. Arihara, K. Matsuura, T. Miyase, Phytochemistry 31(1), 237 (1992)
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(2013). Gymnemaside VII. In: Azimova, S.S. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0541-2_1321
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