Table 1.
Aryl ring optimizationa
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|---|---|---|---|---|---|
| R1 | R2 | R3 | R4 | Ki (μM) | |
| 20 | H | H | H | H | 24.0 ± 0.9 |
| 22 | F | H | H | H | >100 |
| 23 | Cl | H | H | H | 68.0 ± 6.0 |
| 24 | CF3 | H | H | H | 54.8 ± 14.5 |
| 25 | Br | H | H | H | 44.6 ± 7.4 |
| 26 | H | F | H | H | 41.8 ± 5.8 |
| 27 | H | Cl | H | H | 34.9 ± 3.5 |
| 28 | H | Br | H | H | 18.2 ± 0.9 |
| 29 | H | CF3 | H | H | 10.7 ± 1.2 |
| 30 | H | H | F | H | 22.7 ± 3.2 |
| 31 | H | H | CF3 | H | 18.5 ± 2.5 |
| 32 | H | H | Cl | H | 16.8 ± 7.0 |
| 33 | H | H | Br | H | 10.3 ± 1.0 |
| 34 | H | CF3 | F | H | 11.4 ± 0.3 |
| 35 | H | CF3 | Cl | H | 6.0 ± 0.4 |
| 36 | H | CF3 | Br | H | 4.9 ± 1.7 |
| 37 | H | CF3 | H | CF3 | 3.3 ± 0.6 |
| 38 | H | CF3 | Br | CF3 | 1.4 ± 0.3 |
Ki values were determined using at least four independent measurements.
