申请人:Imperial Chemical Industries PLC
公开号:US05134148A1
公开(公告)日:1992-07-28
The invention concerns a heterocycle of the formula I ##STR1## wherein Q is an optionally substituted 6-membered monocyclic or 10-membered bicyclic heterocyclic moiety containing one or two nitrogen atoms; A is (1-6C)alkylene, (3-6C)alkenylene, (3-6C)alkynylene or cyclo(3-6C)alkylene; X is oxy, thio, sulphinyl, sulphonyl or imino; Ar is phenylene which may optionally bear one or two substituents or Ar is an optionally substituted 6-membered heterocyclene moiety containing up to three nitrogen atoms; R.sup.1 is hydrogen, (1-6C)alkyl, (3-6C)alkenyl, (3-6C)alkynyl, cyano-(1-4C)alkyl or (2-4C)alkanoyl, or optionally substituted benzoyl; and R.sup.2 and R.sup.3 together form a group of the formula --A.sup.2 --X.sup.2 --A.sup.3 -- which, together with the carbon atom to which A.sup.2 and A.sup.3 are attached, defines a ring having 4 to 7 ring atoms, wherein A.sup.2 and A.sup.3, which may be the same or different, each is (1-4C)alkylene and X.sup.2 is oxy, thio, sulphinyl, sulphonyl or imino; or a pharmaceutically-acceptable salt thereof. The compounds of the invention are inhibitors of the enzyme 5-lipoxygenase.
该发明涉及式I的杂环##STR1##其中Q是一个可选择地取代的含有一个或两个氮原子的6元单环或10元双环杂环基团;A是(1-6C)烷基、(3-6C)烯基、(3-6C)炔基或环(3-6C)烷基;X是氧、硫、亚砜基、磺酰基或亚胺基;Ar是苯基,可以选择性地带有一个或两个取代基,或Ar是一个可选择地取代的含有最多三个氮原子的6元杂环基团;R.sup.1是氢、(1-6C)烷基、(3-6C)烯基、(3-6C)炔基、氰基-(1-4C)烷基或(2-4C)烷酰基,或可选择地取代的苯甲酰基;而R.sup.2和R.sup.3一起形成一个式--A.sup.2--X.sup.2--A.sup.3--的基团,与A.sup.2和A.sup.3连接的碳原子一起定义具有4到7个环原子的环,其中A.sup.2和A.sup.3,可以相同也可以不同,每个是(1-4C)烷基,而X.sup.2是氧、硫、亚砜基、磺酰基或亚胺基;或其药学上可接受的盐。该发明的化合物是5-脂氧合酶的抑制剂。