| 摘要 |
Novel glutamate receptor antagonists represented by the formula <IMAGE> or a pharmaceutically acceptable salt thereof, wherein Z is an alicyclic fused ring having 5 to 7 carbon atoms; R1 is hydrogen, an alkyl or an arylalkyl; and A is O, CH2, NR4, CH2NR4, CN, tetrazole or CO wherein R4 is hydrogen, alkyl, hydroxyalkyl, aminoalkyl or aralkyl, wherein (i) when A is O, CH2, NR4 or CH2NR4 then B is hydrogen, alkyl, alkenyl, alkynyl, aryl, aralkyl, hydroxyalkyl, alkoxy, aminoalkyl, heterocyclic, alkylheterocyclic, heterocyclic-methyl, heterocyclic-ethyl, alkylcarbonyl, cycloalkylcarbonyl, arylcarbonyl, aralkylcarbonyl, heterocyclic-carbonyl, alkylheterocyclic-carbonyl, or when A is NR4 or CH2NR4 then B is a naturally occurring alpha -amino acid moiety joined by an amide bond or B joins with R4 and the nitrogen to form a four to seven membered heterocyclic ring, provided that when Z is a fused cyclohexyl ring and R4 is hydrogen then B is not hydrogen; (ii) when A is CN then B is not present and Z is not a fused cyclohexyl ring; (iii) when A is tetrazole then B is hydrogen or alkyl having 1 to 6 carbon atoms; and (iv) when A is CO then B is hydroxy, alkoxy, aralkoxy, alkyl having 1 to 6 carbon atoms, aralkyl, NR7R8. |
