摘要:
A series of proline derivated spirocyclic quaternary ammoniums were synthesized and evaluated via in vivo analgesic activities. Compounds 9a showed the best analgesic effect with 84 % inhibition in mice. These compounds showed only micromolar Ki value by in vitro alpha 7 nAChR binding test, which may indicate the form of active metabolite play a role in their in vitro analgesic activities.