ANTISPASMODIC N4-SUBSTITUTED TETRAHYDRO- 1,2,4-OXADIAZINE-5-ONE DERIVATIVES, MANUFACTURE AND MEDICINAL COMPOSITIONThe invention relates to new tetrahydro-1,2,4-oxadiazin-5-one derivatives having a CNS activity. More particularly, the invention concerns new N4-substituted tetrahydro-1,2,4-oxadiazin...