Number and structures of the methylated catechins and dimeric procyanidin metabolites
| Compound | Structure | Monomethylated Metabolites | Dimethylated Metabolites | Overall Number of Detected Metabolites | |||
|---|---|---|---|---|---|---|---|
| FU1 | Linkage | FU2 | FU1 | FU2 | |||
| EC | EC | 2 | 2 | ||||
| CAT | CAT | 2 | 2 | ||||
| B1 | EC | (4β→8) | CAT | 2 | 1 | 3 | 6 |
| B2 | EC | (4β→8) | EC | 2 | 3 | 5 | |
| B3 | CAT | (4α→8) | CAT | 2 | 1 | 3 | 6 |
| B4 | CAT | (4α→8) | EC | 2 | 1 | 3 | 6 |
| B5 | EC | (4β→6) | EC | 2 | 2 | 4 | 8 |
| B7 | EC | (4β→6) | CAT | 2 | 4 | 6 | |
FU, flavanyl unit.