Table 1. SAR of the Fused Benzene Ring.
| entry | compound | R1 | IC50 (μM)a |
|---|---|---|---|
| 1 | 4a | F | 12.02 ± 0.63 |
| 2 | 5a | F | 0.35 ± 0.03 |
| 3 | 5b | Cl | 0.08 ± 0.00 |
| 4 | 5c | CH3 | 1.10 ± 0.11 |
| 5 | 5d | OCH3 | 5.16 ± 0.62 |
| 6 | 6a | F | 4.67 ± 0.42 |
| 7 | 6b | Cl | 0.87 ± 0.01 |
| 8 | 6c | CH3 | >25 |
| 9 | 6d | OCH3 | >25 |
| 10 | 7a | F | 0.43 ± 0.04 |
| 11 | 7b | Cl | 0.24 ± 0.11 |
| 12 | 7c | CH3 | 1.56 ± 0.07 |
| 13 | 7d | OCH3 | 2.10 ± 0.61 |
Data are presented as mean ± standard deviation (SD) (n = 3). SAR, structure–activity relationship.
