| 摘要 |
The invention relates to compounds of the general formula I: <IMAGE> I or a salt thereof, in which A represents a pyridine ring or a halogen substituted pyridine ring, R1 represents hydrogen, alkyl (1-6 C), alkoxy (1-6 C), alkylthio (1-6 C), halogen, OH, SH or CF3 R2 represents hydrogen or a lower alkyl or aralkyl group and N AND M MAY EACH BE 1, 2 OR 3 WITH THE PROVISO THAT THE SUM OF M AND N MUST BE 2, 3 OR 4, HAVING CNS activity, a pronounced antihistamine activity and little or no antiserotonin activity. |
