Abstract
For the analgesic effect of analgesics, Prof. Ogyu forwarded a theory that there is a close relationship between the adrenergic and anticholinergic activities. Attempts were made to find two kinds of drugs each having such activities but not possessing any habituation tendencies in order to obtain a new analgesic without the fear of habituation. As a compound having such anticholinergic activity, fatty acid esters with N-methylpiperazino or morpholino groups in α-position were prepared.
