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) |