Compounds are provided having the structure ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and are hydrogen, lower alkyl, lower alkenyl, or hydroxy-lower alkyl, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached also form a heterocyclic radical which may contain another heteroatom, namely nitrogen, oxygen or sulfur; R.sup.3 and R.sup.4 may be the same or different and are hydrogen or lower alkyl. These compounds are useful in the treatment or arrhythmia. In addition, novel intermediates are provided having the structure ##STR2## wherein R is hydrogen, benzyl or ##STR3## These intermediates are also useful in treating acute myocardial infarction.
提供具有结构##STR1##的化合物,其中R.sup.1和R.sup.2可以相同或不同,分别为氢、低烷基、低烯基或羟基-低烷基,或者R.sup.1和R.sup.2与它们附着的氮原子一起形成一个杂环基团,该杂环基团可能包含另一个杂原子,即氮、氧或
硫;R.sup.3和R.sup.4可以相同或不同,分别为氢或低烷基。这些化合物对于治疗心律失常很有用。此外,提供了具有结构##STR2##的新型中间体,其中R为氢、苄基或##STR3##这些中间体也对于治疗急性心肌梗死很有用。