Taxonomy: Physicochemical and Pharmacological Properties of Flavonoids – Oligostilbenoids
Biological sources: Lophira alata [1]
C60H48O15: 1008.0362 (R = H)
Lophiroflavan A nonamethyl ether (R = CH3) [1]
C70H68O15: 1148
Mp: amorphous solid
FAB-MS: 1149 (M + H)+, 1148 (M)+ [1]
1 H NMR (300 MHz, acetone-d6): 6.86 (m, J = 8.8, H-2,6 A-1), 6.70 (m, J = 8.8, H-5,3, A-1), 4.40 (J = 11.3, H-β-1), 2.73 (ddd, J = 11.3, 4.6, 1.6, H-α-1), 5.46 (d, J = 4.6, H-C-1), 6.37 (d, J = 2.4, H-3′, B-1), 6.62 (dd, J = 8.7, 2.4, H-5′, B-1), 7.42 (d, J = 8.7, H-6′, B-1), 3.82 (s, OMe 4), 3.75 (s, OMe-4′), 7.23 (m, J = 9, H-2,6, A-2), 6.63 (m, J = 9, H-3,5, A-2), 3.33 (dd, J = 8.1, 1.6, H-α2), 4.14 (d, J = 8.1, H-C-2), 6.40 (d, J = 2.4, H-3′, B-2), 6.45 (dd, J = 8.3, 2.4, H-5′, B-2), 6.95 (d, J = 8.3, H-6′, B-2), 3.61 (s, OMe 4), 3.31 (s, OMe 2′), 3.89 (s, OMe-4′), 6.58 (m, J = 8.6, H-2,6, A-3), 6.44 (m, J = 8.6, H-3,5, A-3), 2.13 (dd, J = 13.8, 5.0, H-β-3), 1.99 (dd, J = 13.8, 11.3, H-β-3), 2.99 (dddd, J =...
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References
A.E. Tih, R.G. Tih, B.L. Sondengam, M.T. Martin, B. Bodo, Phytochemistry 31, 981 (1992)
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(2013). Lophiroflavan-A (R=H). In: Azimova, S.S., Vinogradova, V.I. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0535-1_1252
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DOI: https://doi.org/10.1007/978-1-4614-0535-1_1252
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