PHENYLPIPERAZINE DERIVATIVE
    6.
    发明专利

    公开(公告)号:JPS61161268A

    公开(公告)日:1986-07-21

    申请号:JP124685

    申请日:1985-01-08

    摘要: NEW MATERIAL:The phenylpiperazine derivative of formula I (R , R and R are independently 1-3C alkyl; R and R may together form a 1-3C alkylene; X is CO or SO2) or its acid addition salt. EXAMPLE:3-[2-[4-(2-Methoxyphenyl)-1-piperazinyl]ethyl]-6,7-trimethylen edioxy-1- methyl-2,4(1H,3H)quinazolinedione. USE:The compound exhibits hypotensive activity and is useful as a medicinal drug. It is effective at a low dose by oral administration, develops its drug action rapidly, and continues the activity. It has weak acute toxicity and extremely high safety. PREPARATION:The compound of formula I can be produced by converting the phenylpiperazine derivative of formula II to a metal salt such as sodium salt with a metal hydride in an inert solvent such as dimethylformamide, and reacting the product with an alkyl halide at a temperature between room temperature and 150 deg.C.