abstract |
(57) [Summary] [Structure] Formula (I): [Chemical 19] (wherein R 1 is, for example, a methyl group, and R 2 is, for example, 3 - is a morpholinopropyl group), optical isomers thereof, and addition salts with pharmaceutically acceptable acids or bases. [Effect] Compared with conventional compounds, it has higher affinity and selectivity for σ receptors. |