Official Journal of the Japan Wood Research Society
From: Antioxidative catechol lignans/neolignans isolated from defatted kernel of Jatropha curcas
Proton | 1 | 2 | 3 | 4 |
---|---|---|---|---|
2 | 6.72 (d, 1.9) | 6.86 (d, 1.7) | 6.85 (d, 1.7) | 6.85 (d, 1.7) |
5 | 6.67 (d, 8.0) | 6.80 (d, 7.9) | 6.80 (d, 7.9) | 6.80 (d, 8.2) |
6 | 6.58 (dd, 8.2, 1.9) | 6.76 (dd, 8.2, 2.1) | 6.76 (dd, 8.2, 1.4) | 6.76 (dd, 8.3, 2.1) |
7 | 4.52 (d, 4.4) | 4.80 (d, 8.2) | 4.80 (d, 8.2) | 4.80 (d, 8.3) |
8 | 2.93 (m) | 3.99 (ddd, 7.8, 4.9, 2.8) | 3.99 (ddd, 7.5, 4.6, 2.7) | 3.99 (ddd, 7.8, 4.9, 2.7) |
9a | 4.07 (dd, 8.8, 6.9) | 3.66 (dd, 12.4, 2.4) | 3.67 (dd, 12.0, 2.4) | 3.67 (dd, 12.4, 2.4) |
9b | 3.67 (dd, 9.1, 3.5) | 3.47 (dd, 12.2, 4.6) | 3.48 (dd, 12.2, 4.6) | 3.47 (dd, 12.2, 4.6) |
2′ | 6.72 (d, 1.9) | 6.95 (d, 1.7) | 7.02 (d, 1.7) | 6.97 (d, 2.0) |
5′ | 6.67 (d, 8.0) | 6.89 (d, 8.6) | 6.82 (d, 8.6) | 6.89 (d, 8.2) |
6′ | 6.58 (dd, 8.2, 1.9) | 6.92 (dd, 8.6, 2.1) | 6.90 (dd, 8.2, 1.7) | 6.93 (dd, 8.4, 1.9) |
7′ | 4.52 (d, 4.4) | 6.49 (d, 15.8) | 6.50 (d, 15.8) | 6.51 (d, 15.8) |
8′ | 2.93 (m) | 6.20 (dt, 15.8, 5.7) | 6.21 (dt, 15.8, 5.8) | 6.15 (dt, 15.8, 6.4) |
9′a | 4.07 (dd, 8.8, 6.9) | 4.18 (dd, 5.2, 1.4) | 4.19 (d, 5.8) | 4.05 (dd, 6.2, 1.4) |
9′b | 3.67 (dd, 9.1, 3.5) | 4.18 (dd, 5.2, 1.4) | 4.19 (d, 5.8) | 4.05 (dd, 6.2, 1.4) |
OMe | 3.34 (s) |