| |||
|---|---|---|---|
| X = O | X = S | ||
| Comp. | R1 | Ki (nM) | Ki (nM) |
| a | b | ||
| 1 |
| 2600 | - |
| 2 |
| - | 2600 |
| 3 |
| - | 86000 |
| 4 |
| - | 86000 |
| 5 |
| 1500 | 220 |
| 6 |
| 4700 | 35 |