DEPT-Q (400 MHz) and 1H (100 MHz) NMR data for compounds 1 and 2 in DMSO-d6; carbon multiplicities were determined based on DEPT-Q experimentsa.
| Position | 1 | 2 | ||
|---|---|---|---|---|
| δ C | δ H (J in Hz) | δ C | δ H (J in Hz) | |
| 1 | 172.8, qC | 172.8, qC | ||
| 2 | 122.6, qC | 122.6, qC | ||
| 3 | 115.3, CH | 6.88, d (2.4) | 115.3, CH | 6.89, d (2.4) |
| 4 | 146.2, qC | 149.7, qC | ||
| 5 | 163.1, qC | 149.7, qC | ||
| 6 | 113.6, CH | 7.13, d (8.0) | 116.5, CH | 6.88, d (8.0) |
| 7 | 119.0, CH | 7.33, dd (2.4, 8.0) | 126.9, CH | 7.83, dd (2.4, 8.0) |
| 1′ | 149.7, qC | 157.8, qC | ||
| 2′ | 104.9, CH | 6.61, dd (2.4, 3.1) | 113.6, CH | 7.13, dd (2.4, 3.1) |
| 3′ | 157.8, qC | 163.1, qC | ||
| 4′ | 102.8, CH | 6.93, dd (2.4, 3.1) | 102.8, CH | 6.93, dd (2.4, 3.1) |
| 5′ | 157.8, qC | 157.8, qC | ||
| 6′ | 104.9, CH | 6.61, dd (2.4, 3.1) | 104.9, CH | 6.61, dd (2.4, 3.1) |
| –OCH3 | 52.1, CH3 | 3.81, s | 52.1, CH3 | 3.81, s |
a
qC, quaternary; CH, methine; CH3, methyl; δ, ppm.