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Catechin and epicatechin are the health beneficial flavan-3-ols in tea and many fruits. However, their extreme hydrophilicity renders drawbacks for them to pass through the bio-membranes. We prepared lipophilic flavan-3-ol derivatives by acetylation or by acetone-conjugation. The structures of these derivatives were determined based on their NMR and MS spectra. The 3,5- and 3,7-diacetyl derivatives...
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