申请人:Toa Eiyo, Ltd.
公开号:US04874760A1
公开(公告)日:1989-10-17
A 4,7-dihydroisothiazole[5,4-b]pyridine derivative represented by the general formula ##STR1## wherein R.sup.1 represents an alkyl group which may be substituted, R.sup.2 represents a hydrogen atom, a hydroxyl group, a benzyloxy group, a lower alkoxy group, a group of the formula ##STR2## in which R.sup.3 and R.sup.4 are identical or different and each represents a hydrogen atom, a lower alkyl group, an aralkyl group, an aralkynyl group, an aryloxyalkyl group, an arylaminoalkyl group, a pyridylalkyl group or a benzazolylalkyl group, or R.sup.3 and R.sup.4 form a ring and represent a group of the formula ##STR3## where X represents a methine group, a nitrogen atom or an oxygen atom, n is an integer of 1 or 2, and when X is a methine group or a nitrogen atom, R.sup.5 represents a hydrogen atom, a lower alkyl group, a lower hydroxyalkyl group, an aryl group, an aryloxy group, an aralkyl group, a furoyl group, a pyridyl group or a diphenylmethane group each of which group may be substituted, and m is an integer of 1 to 3, or an acid addition salt thereof. Processes for producing said derivative and a cardiovascular treating agent comprising said derivative as an active ingredient are also provided.
该通用式表示的4,7-二氢异噻唑[5,4-b]吡啶衍生物,其中R1表示可以被取代的烷基,R2表示氢原子、羟基、苄氧基、较低的烷氧基、式中的基团##STR2## 其中R3和R4相同或不同,且每个表示氢原子、较低的烷基、芳基烷基、芳基炔基、芳氧基烷基、芳基氨基烷基、吡啶基烷基或苯并咪唑基烷基,或R3和R4形成一个环并表示式中的基团##STR3## 其中X表示亚甲基基、氮原子或氧原子,n是1或2的整数,当X为亚甲基基或氮原子时,R5表示氢原子、较低的烷基、较低的羟基烷基、芳基、芳氧基、芳基烷基、呋喃酰基、吡啶基或二苯甲烷基,每个基团均可被取代,m是1到3的整数,或其酸加成盐。还提供了生产该衍生物的方法以及包含该衍生物作为活性成分的心血管治疗剂。