Taxonomy: Physicochemical and Pharmacological Properties of Flavonoids – Dihydrochalcones and Glicophenones
Biological sources: Polygonum lapathifolium [1]
C17H18O4: 286.3052
Mp: gum.
[α] 24D + 4° (c 0.65, CHCl3)
UV: 285, 320 [1]
IR: 3440 (OH), 1740 (CO), 1620 (aromatic) [1]
MS: 286 (M+, 16), (calc for C17H18O4 286, 121), 255 (31), 255 (31), 181 (100)
1 H NMR (400 MHz, CDCl3): 3.00 (t, J = 7, H-8), 3.32 (t, J = 7, H-7), 3.82 (s, OMe), 3.84 (s, OMe), 5.92 (d, J = 2, H-5′), 6.02 (d, J = 2, H-3′), 7.24 (m, H-3,4,5), 7.29 (m, H-2,6), 14.03 (s, 2′-OH) [1]
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References
M. Ahmed, K. Khaleduzzaman, M.S. Islam, Phytochemistry 29, 2009 (1990)
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(2013). Lapathone (2′-Hydroxy-4′,6′-dimethoxydihydrochalcone). In: Azimova, S.S., Vinogradova, V.I. (eds) Natural Compounds. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0535-1_1152
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