A compound of the formula ##STR1## or a pharmaceutically effective salt thereof in which R.sup.1 and R.sup.2 are hydrogen or lower alkyl and R.sup.3 is halogenoalkenyl or propinyl. The compounds have pharmacological effects similar to those of phenylethylamine but are free from the amphetamine effect with an excellent therapeutic index and selectivity especially with respect to inhibition of monoaminooxidase.
                            式为##STR1##的化合物或其药效有效的盐,其中R.sup.1和R.sup.2为氢或低碳基,R.sup.3为卤代烯基或
丙炔基。这些化合物具有类似苯
乙胺的药理作用,但不具有
安非他命的作用,并且具有出色的治疗指数和选择性,特别是对于单胺氧化酶的抑制作用。