CAS Registry Number: 141360-89-6
Taxonomy: Physicochemical and Biological Properties of Phytoecdysteroids – Phytoecdysteroids and Their Conjugates
C28H44O6: 476.3138
Mp: 250°C (MeOH) [1]
[α] 20D + 56.1° (c 0.46, EtOH) [1]
IR (KBr) νmax cm−1: 3300, 1650, 803 [1]
UV λ MeOHmax nm (log ε): 241 (4.05) [1]
FD-MS m/z: 499 [M + Na]+, 477 [M + H]+, 476 [M]+, 363 [M-C7H13O]+, 113 [C7H13O]+ [1]
1 H NMR (270 MHz, J/Hz, C5D5N): 4.20 (dt, J = 4.0, 11.4, Ha-2), 4.25 (m, He-3), 6.28 (d, J = 2.5, H-7), 3.61 (m, H-9), 2.96 (dd, J = 8.8, 9.4, H-17), 1.24 (s, CH3-18), 1.09 (s, CH3-19), 1.60 (s, CH3-21), 4.05 (dd, J = 1.0, 10.0, H-22), 2.62 (br d, J = 14.5, Ha-23), 2.30 (dd, J = 10.0, 14.5, Hb-23), 1.88 (m, H-24), 2.42 (septed, J = 6.8, H-25), 1.05 (d, J = 6.8, CH3-26), 1.03 (d, J = 6.8, CH3-27), 5.10 (br s, H-28), 4.96 (br s, H′-28) [1]
13 C NMR (100 MHz, C5D5N) [1]:
Table 1
C-1 |
38.0 |
C-11 |
21.1 |
C-21 |
21.5 |
2 |
68.1 |
12 |
21.5 |
22 |
75.4 |
3 |
68.1 |
13 |
48.1 |
23 |
38.3 |
4 |
32.5 |
14 |
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References
T. Ohsawa, M. Yukawa, C. Takao, M. Murayama, H. Bando, Chem. Pharm. Bull. 40, 143 (1992)
Y. Sun, K. Yasukawa, Bioorg. Med. Chem. Lett. 18, 3417 (2008)
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(2013). Polyporusterone B. In: Azimova, S.S. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0543-6_332
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