申请人:Ciba-Geigy Corporation
公开号:US05134134A1
公开(公告)日:1992-07-28
Unsaturated aminodicarboxylic acid derivatives of formula I ##STR1## wherein A is a divalent aliphatic hydrocarbon radical containing 2 carbon atoms and R.sub.1 and R.sub.2 are each independently of the other free or esterified carboxyl groups, and salts thereof, have a pronounced and selective antagonistic action against N-methyl-D-aspartic acid (NMDA)-sensitive excitatory amino acid receptors. These compounds are prepared, for example, by converting, in a formula of formula II ##STR2## wherein Z.sub.1 and Z.sub.2 are hydroxy or protected hydroxy and Z.sub.3 is protected amino, Z.sub.3 into amino and, if present, converting protected hydroxyl groups Z.sub.1 and/or Z.sub.2 into hydroxy and, if desired, converting a resultant compound into another compound of formula I, resolving a resultant mixture of isomers into the individual components and separating the desired preferred isomer and/or converting a resultant free compound into a salt or a resultant salt into the corresponding free compound.
式I的不饱和氨基二羧酸衍生物##STR1##,其中A是含有2个碳原子的二价脂肪烃基,R.sub.1和R.sub.2分别独立于另一个是自由的或酯化的羧基,以及其盐,对N-甲基-D-天冬氨酸(NMDA)敏感的兴奋性氨基酸受体具有显著和选择性的拮抗作用。例如,通过将式II的公式中的化合物转化为氨基,其中Z.sub.1和Z.sub.2是羟基或受保护的羟基,Z.sub.3是受保护的氨基,将受保护的羟基Z.sub.1和/或Z.sub.2转化为羟基,如果需要的话,将所得化合物转化为另一种式I的化合物,将所得异构体混合物分离成单个组分并分离所需的优选异构体和/或将所得的自由化合物转化为盐或将所得的盐转化为相应的自由化合物。