V. Arnaudinaud et al. / Tetrahedron Letters 42 (2001) 1279–1281
1281
diastereomeric dimers, the production of large amounts
(5–10 g) of labelled dimeric compounds is now under
progress. Labelled procyanidins will be used in pharma-
cokinetic studies in human beings, to assess their gut
absorption and their metabolism when delivered at
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Supplementary material
1
Expansion of a water-presaturated H NMR (4.20–4.60
ppm) and full 13C NMR spectra of 13C-labelled pro-
cyanidin B3 15, showing the large coupling constants
due to labelled carbon.
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We thank the MENRT and ONIVins for financial
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of a scholarship from the MENRT and the ONIVins,
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