Table 5.
NMR spectroscopic data (methanol-d4, 500 MHz) for the sugar and phenolic acid units of the compound 11.
| 11 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| δH (J in Hz) | δC | δH (J in Hz) | δC | δH (J in Hz) | δC | δH (J in Hz) | δC | δH (J in Hz) | δC | |||||
| 7-O-α-Rha | 3-O-β-Gal | 2Gal-O-β-Glc | 6Gal-O-α-Rha | 6Glc-O-Cou | ||||||||||
| 1 | 5.53 d (1.3) | 99.9 | 1 | 4.99 d (7.5) | 101.6 | 1' | 4.71 d (7.7) | 106.5 | 1 | 4.48 d (1.4) | 101.8 | 1 | 126.7 | |
| 2 | 4.04 dd (3.1, 1.6) | 71.7 | 2 | 3.98 dd (9.5, 7.6) | 83.0 | 2' | 3.41 dd (9.0, 7.6) | 76.2 | 2 | 3.48 dd (3.8, 1.5) | 72.0 | 2 | 7.07 d (8.6) | 130.7 |
| 3 | 3.84 dd (9.5, 3.4) | 72.1 | 3 | 3.65 dd (9.3, 4.1) | 74.7 | 3' | 3.49 t (9.2) | 77.8 | 3 | 3.41 dd (9.3, 3.9) | 72.3 | 3 | 6.60 d (8.6) | 116.6 |
| 4 | 3.49 t (9.2) | 73.7 | 4 | 3.75 d (3.4) | 70.0 | 4' | 3.38 t (8.7) | 72.1 | 4 | 3.24 t (9.5) | 73.9 | 4 | 161.0 | |
| 5 | 3.64 qd (9.6, 6.2) | 71.2 | 5 | 3.53 t (6.4) | 75.0 | 5' | 3.68 ddd (9.2, 6.5, 2.2) | 75.6 | 5 | 3.48 qd (9.6, 6.1) | 69.7 | 5 | 6.60 d (8.6) | 116.6 |
| 6 | 1.28 d (6.2) | 18.2 | 6 | 3.67 a3.35 a | 66.8 | 6' | 4.47 dd (11.7, 2.5)4.40 dd (11.8, 6.7) | 64.9 | 6 | 1.15 d (6.2) | 18.0 | 6 | 7.07 d (8.6) | 130.7 |
| 7 | 7.32 d (15.9) | 146.4 | ||||||||||||
| 8 | 6.00 d (15.9) | 114.6 | ||||||||||||
| 9 | 168.9 | |||||||||||||
a: overlapping signals.