申请人:Teijin Limited
公开号:US05378700A1
公开(公告)日:1995-01-03
Disclosed is a fused pyrimidine of the formula [I] ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 are as defined in the specification, Y represents a linking group of the formula ##STR2## wherein n is an integer of from 4 to 6, ##STR3## wherein A is a hydrogen atom or alkyl group; and Z represents a hydrogen atom, or other substituents; or Y and Z together represent an unsubstituted or substituted alkyl, alkenyl or arylalkyl group; or a 5- to 7-member heterocyclic ring which has a nitrogen atom, and further, an oxygen or sulfur atom as a hetero atom other than the nitrogen atom, being bonded via the nitrogen atom therein to the 4-position of the pyrimidine ring of the formula (I), a 5- to 7-member unsaturated heterocyclic ring which has 1 to 3 nitrogen atoms being bonded via the nitrogen atom therein to the 4-position of the pyrimidine ring of the formula (I), or a fused biheterocyclic ring constructed with 5- or 6-membered aromatic or non-aromatic rings, which has 1 to 3 nitrogen atoms in any position, being bonded via the nitrogen atom therein to the 4-position of the pyrimidine ring of the formula (I); and m is an integer of from 1 to 3; and a pharmaceutically acceptable acid addition salt thereof, as well as a process for producing same and a pharmaceutical preparation useful for a treatment of hypoxemia associated with respiratory diseases.
本发明揭示了一个融合嘧啶的化合物,其化学式为[I],其中R.sup.1、R.sup.2和R.sup.3如规范中定义,Y代表一个连接基团,其化学式为,其中n为4至6的整数,,其中A是氢原子或烷基基团;Z代表氢原子或其他取代基;或Y和Z一起代表未取代或取代的烷基、烯基或芳基烷基基团;或具有氮原子的5-至7元杂环环,该环中除了氮原子外还有氧原子或硫原子作为异原子,通过其中的氮原子与化合物(I)的嘧啶环的4位键合;具有1至3个氮原子的5-至7元不饱和杂环环,该环中通过其中的氮原子与化合物(I)的嘧啶环的4位键合;或由5-或6元芳香环或非芳香环构成的融合双杂环环,该环中的任意位置具有1至3个氮原子,通过其中的氮原子与化合物(I)的嘧啶环的4位键合;m为1至3的整数;及其药学上可接受的酸盐,以及用于治疗与呼吸系统疾病相关的低氧血症的制备方法和制药制剂。