A benzoxathiin derivative having the formula
wherein R' represents hydrogen atom or a lower alkyl group, and R2 represents a lower alkyl group or an aralkyl group, or a pharmaceutically acceptable acid addition salt thereof Pharmaceutical compositions containing these compounds are extremely excellent as to anti-arrhythmic effect, while toxicity and side-effects are very low as compared to the conventional compounds, so that they can be used safely in the medical field, preferably as an ideal remedy for disorders of the cardiovascular system such as arrhythmia, angina pectoris, hypertension and the like. Said benzoxathiin derivative can be produced economically and effectively by reacting an intermediate compound having the general formula
with an amine having the formula R'R'NH, wherein R' and R2 have the same meanings as defined above.
一种苯并恶嗪衍
生物,其式如下
其中 R'代表氢原子或低级烷基,R2 代表低级烷基或芳烷基,或其药学上可接受的酸加成盐 含有这些化合物的药用组合物具有极佳的抗心律失常效果,而与传统化合物相比,其毒性和副作用非常低,因此可以安全地用于医疗领域,最好是作为心血管系统疾病(如心律失常、心绞痛、高血压等)的理想治疗药物。通过将通式为
与具有式 R'R'NH 的胺反应,其中 R' 和 R2 的含义与上述定义相同。