申请人:Chugai Seiyaku Kabushiki Kaisha
公开号:US05606089A1
公开(公告)日:1997-02-25
Compounds represented by the general formula (I), as well as intermediates for the synthesis of thereof: ##STR1## where R.sup.1 is a hydrogen atom or an acyl group; R.sup.2 is a lower alkyl group; R.sup.3 is a hydrogen atom or a lower alkyl group; R.sup.4, R.sup.5 and R.sup.6, which may be the same or different, are a hydrogen atom or an optionally substituted alkyl, alkenyl, alkynyl or aryl group; R.sup.2 and R.sup.4, when taken together, may form a 5-membered ring; R.sup.5 and R.sup.6, when taken together, may form a cycloalkyl group or a heterocyclic group in which at least one methylene on the ring of a cycloalkyl group is substituted by an oxygen atom, a sulfur atom or an alkyl-substituted nitrogen atom, provided that R.sup.6 is not present if the ring formed by R.sup.2 and R.sup.4 taken together is a benzofuran ring. The compounds represented by the general formula (I) have a highly selective anti-oxidative activity and are useful as therapeutics of ischemic diseases such as arteriosclerosis and myocardial infarction.
通式(I)所代表的化合物以及其合成中间体:
其中,R.sup.1是氢原子或酰基基团;R.sup.2是较低的烷基基团;R.sup.3是氢原子或较低的烷基基团;R.sup.4,R.sup.5和R.sup.6,可以相同也可以不同,是氢原子或可选取代的烷基,烯基,炔基或芳基基团;当R.sup.2和R.sup.4结合在一起时,可以形成一个5元环;当R.sup.5和R.sup.6结合在一起时,可以形成一个环烷基或杂环基,在环烷基上至少有一个亚甲基被氧原子,硫原子或烷基取代的氮原子所取代,但是当R.sup.2和R.sup.4结合在一起形成苯并呋喃环时,R.sup.6不存在。通式(I)所代表的化合物具有高度选择性的抗氧化活性,可用作缺血性疾病如动脉硬化和心肌梗塞的治疗剂。