Table 2.
Structures and mAChR activities of analogs 17a–h.
| |||
|---|---|---|---|
| Compound | R | hM4 IC50 (μM)a [% ACh Min ±SEM] | hM4 pIC50 (±SEM)a |
| 17a |
|
>10 | >5 |
| 17b |
|
0.58 [5.5±2.9] | 6.25±0.09 |
| 17c |
|
2.47 [11.8±1.5] | 5.62±0.08 |
| 17d |
|
0.41 [5.1±0.6] | 6.39±0.05 |
| 17e |
|
0.34 [18.4±2.3] | 6.49±0.06 |
| 17f |
|
1.04 [6.0±0.5] | 6.00±0.05 |
| 17g |
|
>10 | >5 |
| 17h |
|
>10 | >5 |
Mean of three independent determinations in a calcium mobilization assay using recombinant hM4-expressing Chinese hamster ovary cells co-transfected with chimeric Gqi5 in the presence of an ACh EC80.