Position | 1H NMR (J; Hz) | 13C NMR | ||
---|---|---|---|---|
4′-O-MeEGC | EGC | 4′-O-MeEGC | EGC | |
2 | 4.83 (s) | 4.820 | 79.33 | 79.46 |
3 | 4.20 (m) | 4.190 | 66.90 | 67.02 |
4α | 2.72 (dd J = 16.5, 3.3) | 2.727 | 29.01 | 28.82 |
4β | 2.84 (dd J = 16.8, 4.4) | 2.849 | 29.01 | 28.82 |
4a | 99.62 | 99.92 | ||
5,7 | 156.88 | 157.57 | ||
6 | 6.01 (d J = 2.2) | 6.016 | 96.18 | 96.18 |
8 | 5.91 (d J = 2.2) | 5.913 | 95.64 | 95.73 |
8a | 156.88 | 157.14 | ||
1′ | 136.26 | 131.56 | ||
2′,6′ | 6.58 (d J = 0.5) | 6.574 | 107.02 | 106.97 |
3′,5′ | 150.78 | 146.17 | ||
4′ | 135.25 | 132.97 | ||
OCH3 | 3.77 (s) | 60.61 |
↵1-a Chemical shifts are expressed in ppm down field from the signal for tetramethylsilane in acetone-d 6, and coupling constant in Hz are in parentheses of the second column.