摘要 |
There are disclosed novel 4H-1-benzopyran-4-ones and their sulphur containing analogs which are effecacious for the treatment of psychosis including schizophrenia. The compounds have the formula (I) …<CHEM>… wherein X is oxygen or sulfur, n is 2, 3, 4 or 5 and R is …<CHEM>… in which Ar is an aryl. |