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Table 2 1H-NMR data for compounds 4, 8, 9, and 10 (CD3OD)

From: Screening for cytotoxic chemical constituents from Justicia procumbens by HPLC–DAD–ESI–MS and NMR

Position

4

8

9

10

δH (J in Hz)

δH (J in Hz)

δH (J in Hz)

δH (J in Hz)

4

7.73 (s)

   

5

7.26 (s)

7.48 (s)

7.60 (s)

7.66 (s)

8

6.95 (s)

6.91 (s)

6.96 (s)

7.05 (s)

12

5.30 (2H, s)

5.53 (2H, s)

5.53 (d, 14.7)

5.42 (d, 14.7)

5.56 (d, 14.8)

5.48 (d, 14.1)

2′

6.53 (s)

6.49 (s)

6.71 (d, 1.2)

6.78 (d, 2.2)

5′

7.02 (s)

7.01 (s)

6.86 (d, 7.8)

6.95 (d, 7.7)

6′

  

6.68 (dd, 1.2, 7.9)

6.78 (dd, 1.7, 7.0)

3′-OCH2O-4′

5.94 (s)

5.91 (s)

5.93 (s)

5.90 (s)

5.96 (s)

5.94 (s)

6.05 (s)

6.04 (s)

4-OCH3

 

4.07 (3H, s)

  

6-OCH3

3.89 (3H, s)

3.89 (3H, s)

3.94 (3H, s)

4.02 (s)

7-OCH3

3.66 (3H, s)

3.66 (3H, s)

3.63 (3H, s)

3.73 (s)

1′′

4.62 (d, 7.8)

4.59 (d, 8.0)

5.74 (d, 1.9)

5.49 (d, 3.6)

2′′

2.78 (t, 7.9)

2.80 (t, 8.6)

4.68 (d, 2.3)

4.58 (d, 3.8)

3′′

3.21 (m)

3.21 (m)

  

4′′

3.07 (t, 9.4)

3.08 (t, 9.4)

4.19 (d, 9.7)

3.81 (d, 9.7)

4.35 (d, 9.6)

3.99 (d, 10.7)

5′′

3.21 (m)

3.21 (m)

4.50 (dd, 11.6)

3.64 (dd, 11.6)

4.01 (d, 10.8)

3.79 (d, 9.6)

6′′

3.49 (2H, dd, 5.8, 11.9)

3.50 (2H, dd, 5.8, 11.9)

  

1′′′

  

4.52 (d, 7.8)

4.34 (d, 7.2)

2′′′

  

3.14 (m)

3.29 (t, 11.0)

3′′′

  

3.25 (m)

3.39 (t, 8.4)

4′′′

  

3.31 (t, 9.0)

3.54 (m)

5′′′

  

3.41 (m)

3.92 (dd, 5.2, 10.9)

3.24 (dd, 9.4, 10.7)

6′′′

  

3.69 (dd, 2.1, 11.6)

3.48 (dd, 4.8, 11.8)