Table 1.
NMR spectral data for compound 1 (CDCl3, 500 and 125 MHz).
| No. | δH [mult., J (Hz)] | δC (mult.) | HMBC |
|---|---|---|---|
| 2 | - | 133.5 (C) | - |
| 3 | 6.93 d (3.5) | 125.9 (CH) | 2, 4, 5 |
| 4 | 6.64 brs | 124.0 (CH) | 2, 3, 5 |
| 5 | - | 137.3 (C) | - |
| 2' | - | 134.2 (C) | - |
| 3' | 6.97 d (3.5) | 121.2 (CH) | 2 |
| 4' | 6.96 d (3.5) | 122.3 (CH) | 2', 3', 2'' |
| 5' | - | 128. 9 (C) | - |
| 2'' | - | 134.7 (C) | - |
| 3'' | 6.98 d (3.5) | 121.5 (CH) | 4''', 2''' |
| 4'' | 7.02 d (3.5) | 122.3 (CH) | 2''' |
| 5'' | - | 126.1 (C) | - |
| 2''' | - | 135.1 (C) | - |
| 3''' | 6.99 d (3.5) | 125.8 (CH) | 4''', 5''', 2''' |
| 4''' | 7.12 d (3.5) | 121.6 (CH) | 2''', 2'''', 3''', 5''' |
| 5''' | - | 132.8 (C) | - |
| 2'''' | - | 135.3 (C) | - |
| 3'''' | 7.04 brs | 122.5 (CH) | 4'''', 5''' |
| 4'''' | 7.14 brd (3.5) | 121.7 (CH) | 2'''', 3'''' |
| 5'''' | 7.21 brd (5.5) | 123.0 (CH) | 3'''', 4'''' |
| 5-CH3 | 2.42 s | 15.4 (CH3) | 4, 5 |