申请人:——
公开号:EP0211457A3
公开(公告)日:1987-07-22
Novel (4-substituted-piperazinyl)pyridazines of formula
wherein R is hydrogen, halo, C1-6alkyloxy, hydroxy or phenyl;
m is the integer 2 or 3;
R¹, R², R³ and R⁴ are, each independently, hydrogen, or C1-6alkyl;
or where R³ and R⁴ are substituted on a different carbon atom, R³ and R⁴ taken together, may form a bivalent radical -CH₂-CH₂-;
R⁵ is (aryl)C2-6alkenyl, (aryl)C2-6alkynyl, (aryl)(hydroxy)C1-6alkyl or (aryl)(oxo)C1-6alkyl;
the N-oxide forms, the pharmaceutically acceptable acid addition salts and the possible stereochemically isomeric forms, which compounds are analgesic and antitussive agents; pharmaceutical compositions containing such compounds as an active ingredient and methods of preparing said compounds and pharmaceutical compositions.
新型(4-取代哌嗪基)吡啶嗪的化学式如下:
其中R为氢、卤素、C1-6烷氧基、羟基或苯基;
m为整数2或3;
R¹、R²、R³和R⁴分别独立地为氢或C1-6烷基;
或者当R³和R⁴在不同的碳原子上取代时,R³和R⁴一起可以形成二价基团-CH₂-CH₂-;
R⁵为(芳基)C2-6烯基、(芳基)C2-6炔基、(芳基)(羟基)C1-6烷基或(芳基)(羰基)C1-6烷基;
这些化合物包括N-氧化物形式、药学上可接受的酸盐和可能的立体化异构体形式,这些化合物是镇痛和镇咳剂;含有这类化合物作为活性成分的药物组合物以及制备这些化合物和药物组合物的方法。