Substituted 2-aminoalk-3-enoic acid derivative of formula I ##STR1## wherein R.sub.1 is an aliphatic hydrocarbon radical that is substituted by optionally acylated or aliphatically or araliphatically etherified hydroxy, by halogen, by optionally acylated and/or aliphatically substituted amino or by an aza-, diaza-, azoxa- or oxa-cycloaliphatic radical, or is an oxacycloaliphatic hydrocarbon radical bonded via a carbon atom, or is an optionally aliphatically N-substituted or N-acylated azacycloaliphatic hydrocarbon radical, and R.sub.2 is free or esterified carboxy, and their salts exhibit NMDA-antagonistic properties and are useful as active ingredients of anticonvulsive medicaments.
取代的2-
氨基烷基-3-
烯酸衍
生物的公式I ##
STR1## 其中R.sub.1是一个被取代的
脂肪烃基团,可以通过选择性地酰化或
脂肪族或芳
脂肪族醚化的羟基,通过卤素,通过选择性地酰化和/或
脂肪族取代的
氨基,或者通过一个aza-,diaza-,azoxa-或oxa-环
脂肪族基团,或者是一个通过
碳原子连接的
氧杂环
脂肪烃基团,或者是一个选择性地
脂肪族N-取代或N-酰化的
氮杂环脂肪烃基团,并且R.sub.2是自由的或
酯化的羧基,它们的盐类具有N
MDA-拮抗性质,并且作为抗惊厥药物的有效成分是有用的。