(<(trifluoromethyl-3 phenyl)-4 piperazinyl-1>4 butyryl)-6 methyl-3 benzoxazolinone
(<(methoxy-2 phenyl)-4 piperazinyl-1>4 butyryl)6 methyl-3 benzoxazolinone
(<(fluoro-4 phenyl)-4 piperazinyl-1>-4 butyryl)-6 methyl-3 benzoxazolinone
(<(pyrimidino-2)-4 piperazinyl-1>-4 butyryl)-6 methyl-3 benzoxazolinone
(<(pyrimidino-2)-4 piperaxinyl-1>-4 hydroxy-1 butyl)-6 methyl-3 benzoxazolinone