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Official Journal of the Japan Wood Research Society

Table 2 1H NMR spectral data of compounds 14 (δ, mult, J in Hz)

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)

  1. Spectral were recorded in CD3OD at 600 Mz