| 摘要 |
PROBLEM TO BE SOLVED: To provide a compound showing therapeutic activity against the central nervous system. SOLUTION: A method for producing the compound represented by formula (I) [wherein R<SB>1</SB>-R<SB>4</SB>are each hydrogen; and HA is L-malic acid] and shows therapeutic activity against the central nervous system is provided. COPYRIGHT: (C)2010,JPO&INPIT |
