摘要 |
A compound having the formula <CHEM> wherein R<1> is C1-6-alkyl which may be branched or cyclic; R<2> is C1-6-alkyl which may be branched or cyclic; or wherein R<1> and R<2> together represent -(CH2)n-, wherein n is 3, 4, 5. and a method of treating disorders of a mammal, including a human, responsive to the blockade of glutamic and aspartic acid receptors, with the same. |