Tetracyclic compounds having anti-allergic and anti-asthmatic activities
申请人:Sankyo Company, Limited
公开号:US05362725A1
公开(公告)日:1994-11-08
Compounds of formula (I): ##STR1## in which: Q is nitrogen or .dbd.CH--; R.sup.1 and R.sup.2 are hydrogen, alkyl, alkoxy, hydroxy, trifluoromethyl or halogen; and R.sup.3 is a substituted alkyl groups or a pharmaceutically acceptable salt thereof have valuable anti-allergic and anti-asthmatic activities. The compounds are prepared by reacting a corresponding compound where R.sup.3 is replaced by a hydrogen atom with a compound to introduce the group R.sup.3.
Novel tetracyclic compounds having anti-allergic and anti-asthmatic activities, their preparation and use
申请人:Sankyo Company Limited
公开号:EP0421823A2
公开(公告)日:1991-04-10
Compounds of formula (I):
[in which; Q is nitrogen or =CH-; R1 and R2 are hydrogen, alkyl, alkoxy, hydroxy, trifluoromethyl or halogen; and R3 is various specific substituted alkyl groups] and pharmaceutically acceptable salts thereof have valuable anti-allergic and anti-asthmatic activities. They may be prepared by reacting a corresponding compound where R3 is replaced by a hydrogen atom with a compound to introduce the group R3.