Table 4.
13C NMR (125 MHz) data of benzamides 1–5 in DMSO-d6, (δC, mult.).
| Position | Anthra. (1) a) | Pyram. A (2)a,b) | Pyram. B (3) a) | Pyram. C (4) a) | Pyram. D (5) a) |
|---|---|---|---|---|---|
|
| |||||
| δC, mult. | δC, mult. | δC, mult. | δC, mult. | δC, mult. | |
| 1 | 113.7 s | 107.3 s | 106.9 s | 107.5 s | 107.8 s |
| 1-CO | 171.3 s | 172.4 s | 172.9 s | 173.4 s | 172.5 s |
| 2 | 150.2 s | 163.6 s | 156.7 s | 149.6 s | 158.8 s |
| 3 | 116.4 d | 101.2 d | 135.1 s | 124.9 s | 113.9 s |
| 3-NHCO | - | - | - | - | 168.3 s |
| 3-NHCOCH3 | - | - | - | - | 22.7 q |
| 3-OCH3 | - | - | 59.8 | - | - |
| 4 | 131.9 d | 164.0 s | 154.9 s | 149.7 s | 159.4 s |
| 4-OCH3 | - | 55.5 q | - | 55.9 q | 55.9 q |
| 5 | 114.5 d | 106.1 d | 107.0 d | 102.3 d | 102.0 d |
| 6 | 128.5 d | 129.5 d | 123.5 d | 123.5 d | 127.1 d |
a)
See also Figures S6, S13, S25, S32 and S37 for comparison;
b)
For 13C NMR data in CDCl3, see the experimental part.