the excitatory effects of the 3- isoxazolol amino acids ( rs ) -3-hydroxy-4,5,6,7-tetrahydroisoxazolo [ 5 , 4-c ] pyridine-7-carboxylic acid ( 4 , 7- hpca ) , ( rs ) -alpha-amino-3-hydroxy-5,6-dihydro-4h- cyclohept [ 1,2-d ] isoxa zole - 8-propionic acid ( 8 , 8- ahcp ) , ( rs ) -alpha-amino-3- hydroxy-7,8-dihydro-6h- cyclohept [ 1,2-d ] isoxazole -4-propionic acid ( 12 , 4- ahcp ) , and ( rs ) -alpha- ( methylamino ) -3-hydroxy-5-methyl- 4- isoxazolepropionic acid ( 15 , n-me-ampa ) were shown to be sensitive to ( s ) -glutamic acid diethyl ester ( gdee ) , an antagonist at quisqualic acid ( quis ) receptors , and insensitive to ( rs ) -2-amino-5-phosphonovaleric acid ( 2apv ) , an antagonist at n-methyl- ( r ) -aspartic acid ( nmda ) receptors .
C0022266
isoxazole
C0051318
ampa