| 摘要 |
2101933 9214813 PCTABS00015 This invention involves novel neuroprotectant agents of formula (I), in which R1 and R3 are, independently, hydrogen, cyano, nitro, halo or perhaloalkyl, with the proviso that one of R1 and R3 is other than hydrogen; R2 is alkyl; or a pharmaceutically acceptable salt thereof, processes for preparing them, compositions containing them and their use as NMDA antagonists.
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