The diagnostic and prognostic significance of coronary artery calcification

The invention provides novel 3-oxo-2,3-dihydro-1,4-benzoxanines carrying a carbamoylakyl radical in the 5-position which have useful therapeutic properties as muscle relaxing agents, analgesics, anti-pyortics, anti-convulsion agents, anti-inflammatories, analgesics, and anti-pyretics.