SYNTETIC EXCITATORY AMINO ACIDS, PHARMACEUTICAL COMPNS. CONTG. THEM, PROCESS FOR PREPARING THE SAID COMPDS. AND THEIR INTERMEDIATES

摘要

The present invention provides novel compounds that act to affect positive amino acid receptors and are useful in the treatment of aneurological and psychiatric disorders. Compounds of formula (I) and pharmaceutically acceptable salts thereof, wherein X is (CH2) n; R2 is CO2R4 and R3 is hydrogen or R2 is hydrogen and R3 is CO2R4; R 1 and R 4 are each independently hydrogen, C 1-10 alkyl, C 2-10 alkenyl, aryl or arylalkyl; andn meaning 1. ŕ