Abstract
More than 20 compounds have been isolated from the bark ofQuercus robur. Monomers: (−)-epicatechin, (−)-epicatechin gallate, (+)-catechin, (+)-catechin gallate, (+)-gallocatechin, (−)-epigallocatechin, and (−)-epigallocatechin gallate; dimeric proanthocyanidins: (+)-catechin-(4α-8)-(+)-catechin, 3-O-galloyl-(+)-catechin-(4α-8)-3-O-galloyl-(+)-catechin, 3-O-galloyl-(+)-gallocatechin-(4β-8)-(+)-gallocatechin, (−)-epicatechin-(4β-8)-3-O-galloyl-(−)-epigallocatechin gallate, 3-O-galloyl-(−)-epicatechin-(4β-8)-3-O-galloyl-(−)-epigallocatechin, 3-O-galloyl-(−)-epigallocatechin-(4β-8)-(+)-catechin; and oligomeric proanthocyanidins: D14-D19.
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Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 40 64 75. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 819–833, November–December, 1997.
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Kuliev, Z.A., Vdovin, A.D., Abdullaev, N.D. et al. Study of the catechins and proanthocyanidins ofQuercus robur . Chem Nat Compd 33, 642–652 (1997). https://doi.org/10.1007/BF02249631
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DOI: https://doi.org/10.1007/BF02249631