Table 2. SGK1 Activity of Selected 1H-Pyrazolo[3,4-b]pyrazines 14, 16, and 21.
| sulfonamide Ar | X | IC50 (μM) 10 μM (ATP) | IC50 (μM) 500 μM (ATP) | |
|---|---|---|---|---|
| 14a | 1-naphtyl | H | 0.016 | 0.760 |
| 14b | 3-(2,5-dichlorothienyl) | H | 0.004 | 0.183 |
| 14c | 3-Cl-5-hydrazino-Ph | H | 0.196 | 0.639 |
| 14d | 2-ClPh | H | 0.014 | 0.910 |
| 14e | 2-Cl-3-FPh | H | 0.021 | 1.26 |
| 14f | 2,4-diClPh | H | 4.76 | |
| 14g | 2,3-diClPh | H | 0.003 | 0.442 |
| 14h | 2,5-diClPh | H | 0.005 | 0.025 |
| 14i | 2-Cl-5-MeOPh | H | 0.002 | 0.034 |
| 14j | 2-Cl-4-CF3Ph | H | 0.407 | 18.9 |
| 14k | 2-FPh | H | 0.022 | 1.49 |
| 14l | 2,5-diFPh | H | 0.015 | 0.730 |
| 14m | 5-Cl-2,4-diFPh | H | <0.002 | 0.041 |
| 14n | 5-Cl-2-FPh | H | 0.001 | 0.041 |
| 14o | 2-F-5-MePh | H | 0.002 | 0.039 |
| 14p | 2-F-5-MeOPh | H | <0.002 | 0.004 |
| 14q | 5-Cl-2-CNPh | H | 0.01 | 0.293 |
| 14r | 5-Me-2-CNPh | H | 0.003 | 0.061 |
| 14s | 5-MeO-2-CNPh | H | 0.002 | 0.040 |
| 14t | 2,3-diClPh | F | 0.003 | 0.182 |
| 14u | 2,5-diClPh | F | 0.002 | 0.013 |
| 14v | 5-Cl,2-FPh | F | 0.002 | 0.050 |
| 16a | 2,5-diClPh | H | 0.439 | 4.55 |
| 16b | 2,5-diClPh | F | 0.496 | 3.33 |
| 16c | 2,3-diClPh | F | 0.419 | 5.73 |
| 21a | 2,3-diClPh | 0.013 | 0.605 | |
| 21b | 2,5-diClPh | 0.002 | 0.011 | |
| 21c | 5-Cl-2-FPh | 0.004 | 0.088 | |
| 21d | 5-Cl-2-CNPh | 0.003 | 0.150 | |
| 21e | 5-Me-2-CNPh | 0.003 | 0.58 | |
| 21f | 2-F-5-MePh | 0.002 | 0.029 | |
| 21g | 2-Cl-5-MeOPh | 0.002 | 0.034 | |
| 21h | 2,5-diFPh | 0.029 | 1.34 |