Table 5.
Fluorine Substitutionsa
|
||||||||
|---|---|---|---|---|---|---|---|---|
| compound | C-5 | C-6 | C-7 | C-8 | C-2 | R | MIC (μg/mL) | clog P |
| 68 | H | H | CF3 | H | CHF2 | 3,4-dichlorophenyl | 1 | 6.3 |
| 69 | H | H | CF3 | H | CHF2 | 3-(trifluoromethoxy)phenyl | 0.5 | 6.6 |
| 74 | H | H | F | H | CF3 | 3,4-dichlorophenyl | 0.5 | 7.0 |
| 75 | H | H | F | H | CF3 | 3-(trifluoromethoxy)phenyl | 2 | 6.7 |
| 76 | H | H | F | H | CF3 | 5-(trifluoromethyl)pyridin-2-yl | 1 | 5.3 |
| 77 | F | F | H | H | CF3 | 5-(trifluoromethyl)pyridin-2-yl | 16–32 | 5.3 |
| 78 | H | F | F | H | CF3 | 5-(trifluoromethyl)pyridin-2-yl | 0.25 | 5.3 |
| 79 | F | F | H | F | CF3 | 5-(trifluoromethyl)pyridin-2-yl | >32 | 5.5 |
C-2 refers to the position of the quinoline scaffold. Similarly, C-5, C-6, C-7, and C-8 refer to the respective positions on the quinoline nucleus.