BENZISOXAZOLES By N., Sam M.S. - April 7, 2013 pl. n. a group of aromatic organic compounds which structurally contains a benzene-fused isoxazole ring. This class of pharmaceutical drugs includes antipsychotics like risperidone and iloperidone. BENZISOXAZOLES: "There are antipsychotic and anticonvulsant drugs which belong to the class of benzisoxazoles."