Taxonomy: Physicochemical and Pharmacological Properties of Flavonoids – Dihydrostilbenes
Biological sources: Glycyrrhiza uralensis [1]
C24H30O5: 398.5037
Mp: amorphous powder
[α]D 0°
UV: 209 (4.96), 230 sh (4.46), 285 (4.12) [1]
EI-MS: 399 (M + 1+) (27), 398 (M+, 100), 341 (28), 275 (18), 271 (25), 261 (47), 257 (16), 203 (24), 189 (11), 161 (25), 137 (17), 123 (55), 69 (14) [1]
HR-MS: 398.2160 (M)+ [1]
1 H NMR (400 MHz, Me2CO-d6): 1.17, 1.32 (each 3H, s, Me-14), 1.65 (3H, br d, J = 1, Me-9), 1.76 (3H, br s, Me-9), 2,58 (1H, dd, J = 8, 16, H-12, overlapping with the signal at 2.59), 2.59, 2.75 (each 2H, m, H2-α or H2-β), 2.93 (1H, dd, J = 5, 16, H-12), 3.35 (2H, br d, J = 6, H2-7), 3.75 (1H, t d, J = 5, 8, H-13), 4.15 (1H, br d, J = 5, OH-13), 5.13 (1H, br t, J = 6, H-8), 6.22 (1H, s, H-4) 6.59 (1H, dd, J = 2, 8, H-6′), 6.75 (1H, d, J = 2, H-2′), 6.75 (1H, d, J = 8, H-5′), 7.70 (2H, br s, 2OH), 8.00 (1H, br s, OH) [1]
1 H NMR (400 MHz, CD3OD): 1.17, 1.28 (each 3H, s, Me-14), 1.65,...
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References
T. Fukai, Q.H. Wang, T. Nomura, Phytochemistry 30, 1245 (1991)
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(2013). Gancaonin-T. In: Azimova, S.S., Vinogradova, V.I. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0535-1_1213
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