UN METODO DE PREPARACION DE UN COMPUESTO DE TIADIAZINA

摘要

A thiadiazine compound of the formula: a method for preparing said compound and a pharmaceutical composition containing said compound, wherein X is methylene which may be optionally substituted by an alkyl of up to 3 carbon atoms; R is hydrogen atom or methyl group; and n is an integer of 1 or 2. Since the compounds exhibit potent cardiotonic and coronary vasodilator activities and further inhibitory activity on platelet aggregation, they are useful as cardiotonic and antithrombotic drugs.