| abstract |
(57) [Summary]nCompounds having formula (I) wherein R is as defined herein and their pharmaceutically acceptable salts, are prodrugs of competitive N-methyl-D-aspartate antagonists, Useful in the treatment of certain conditions and diseases that block NMDA receptor sites and respond to blockade of NMDA receptor sites including head trauma, stroke, multiple cerebral infarction dementia and other diseases is there. |