Benzopyrancarboxamide derivatives, salt thereof, process for the preparation of same and use thereof
申请人:SANWA KAGAKU KENKYUSHO CO., LTD.
公开号:EP0691341A1
公开(公告)日:1996-01-10
There are disclosed a benzopyrancarboxamide derivative of the formula
wherein R¹ is hydrogen atom or a lower alkyl group; R² is hydrogen atom, a lower alkyl group, halogen atom, an amino radical or an acylamino group; R³ is hydrogen atom, a lower alkyl group, a lower alkoxy group or halogen atom; dotted line is a possible double bond; and n is an integer of 1 - 5,
and a pharmacologically acceptable salt of the compound, a process for the preparation of the compound and salt as well as use thereof.
The derivative and salt can be easily synthesized, show powerful agonisting action to 5-HT₄ receptor and has very low side effect to central nerve system.