NEW CHROMAN DERIVATIVE AND MEDICINE CONTAINING THE SAME

    公开(公告)号:JPH1149771A

    公开(公告)日:1999-02-23

    申请号:JP21080497

    申请日:1997-08-05

    摘要: PROBLEM TO BE SOLVED: To obtain a new compound selectively acting on α1 receptor of urethral smooth muscle, having little adverse effects such as increased blood pressure, and useful for treatment of incontinence of urine. SOLUTION: This new compound is a compound expressed by formula I (R is a 1-6C alkyl; R is H, OH or a 1-6C alkyloxy) or a salt thereof, e.g. 4-(2-imidazolinyl)-8-(methylsufonylamino)chroman. The compound of formula II is obtained by using 8-nitro-4-chromanone derivative as a starting material, subjecting it to cyanation, dehydration, reduction, and sulfonylation to deviate a 4-cyano-8-alkylsulfonylamino)chroman derivative expressed by formula III, reacting the compound of formula III with hydrochloride acid gas in an alcohol solvent to convert it to the corresponding imidate and reacting the imidate with ethylenediame.