DERIVATIVES OF 2-(8,9-DIOXO-2,6-DIAZABICYCLO(5.2.0)NON-1(7)-EN-2-YL)ALKYL PHOSPHONIC ACID AND THEIR USE AS N-METHYL-D-ASPARTATE (NMDA) RECETOR ANTAGONISTS.

摘要

Compounds of formula (I) or pharmaceutically acceptable salts thereof are provided where at least one of R2 or R3 is not hydrogen. The compounds of the present invention are N-methyl-D-aspartate (NMDA) receptor antagonists and are useful in treating a variety of conditions present in a mammal that benefit from inhibiting the NMDA receptor.