O-carbamoyl-(d)-phenylalaninol compounds, their pharmaceutically useful salts and process for preparing the same

摘要

The present invention relates to O-carbamoyl-(D)-phenylalaninol compound represented by the following structural formula V and pharmaceutically acceptable salts thereof to treat diseases of the central nervous system: <IMAGE> (V) wherein R1 and R2 may be the same with or different from each other and are independently selected from the group consisting of hydrogen, lower alkyl containing 1 to 8 carbon atoms, and 5 to 7-membered aliphatic cyclic compounds which may comprise not more than two nitrogen or oxygen atoms directly unconnected, the total number of carbon atom of R1 and R2 ranging from 0 to 16.