FUSED THIOPHENE COMPOUNDS AND MEDICINAL USE THEREOF

摘要

Fused thiophene compounds represented by general formula (I), pharmaceutically acceptable salts thereof or hydrates of the same, wherein each symbol is as defined in the description. The compounds of general formula (I) are useful as novel antipsychotics which are efficacious against both of positive and negative symptoms of schizophrenia, exhibit little side effects such as extrapyramidal motility disturbance, and have little severe side effects such as granulocytopenia. These compounds are also useful as remedies for dementia of Alzheimer type and periodic psychosis.