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.
公式I中的2-
氨基烯酸衍
生物,其中R.sub.1是一种脂肪烃基团,其通过可选酰化或脂肪烷基或芳基醚化羟基,卤素,可选酰化和/或脂肪基取代的
氨基或是氮杂、二氮杂、氧杂环脂肪基团取代,或是通过碳原子与一个氧杂环脂肪基团结合的氧杂环脂肪基团,或是可选脂肪基N取代或N酰化的氮杂环脂肪基团;R.sub.2是自由或酯化羧基,它们的盐具有N
MDA-拮抗作用,并可用作抗癫痫药物的活性成分。