申请人:Yamanouchi Pharmaceutical Co., Ltd.
公开号:US04041032A1
公开(公告)日:1977-08-09
Pyrazine derivatives by the formula ##STR1## are disclosed. In the above formula, R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, a hydroxy group, a lower alkoxy group, a phenyl lower alkoxy group, a phenoxy group, a mercapto group, a lower alkylthio group, a phenyl lower alkylthio group, a phenylthio group, an amino group, a substituted amino group, a lower alkyl group, a carbamoyl group or a sulfamoyl group; R.sup.3 represents a lower alkoxy group; R.sup.4, R.sup.5, and R.sup.6, which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a cycloalkyl group, a phenyl lower alkyl group, or a phenyl group; and A represents a lower alkylene group; said R.sup.4 and A, said R.sup.5 and A, said R.sup.4 and R.sup.5, or said R.sup.5 and R.sup.6 may form a 5-membered or 6-membered nitrogen-containing heterocyclic ring which may further contain a hetero-atom together with nitrogen atom, and the pharmacologically acceptable non-toxic salts thereof. The compounds of this invention have a strong and selective antiematic activity and an effect of stimulating the gastric motility.
公开了公式为##STR1##的吡嗪衍生物。在上述公式中,R.sup.1和R.sup.2,可以相同也可以不同,每个代表氢原子、卤素原子、羟基、较低的烷氧基、苯基较低的烷氧基、苯氧基、巯基、较低的烷基硫基、苯基较低的烷基硫基、苯硫基、氨基、取代氨基、较低的烷基、氨基甲酰基或磺胺基;R.sup.3代表较低的烷氧基;R.sup.4、R.sup.5和R.sup.6,可以相同也可以不同,每个代表氢原子、较低的烷基、环烷基、苯基较低的烷基或苯基;A代表较低的烷基烯基;所述的R.sup.4和A、所述的R.sup.5和A、所述的R.sup.4和R.sup.5,或所述的R.sup.5和R.sup.6可以形成一个含氮的5-或6-成员杂环环,该环可能进一步与氮原子一起含有一个杂原子,并且其药理学上可接受的无毒盐。本发明的化合物具有强大且选择性的抗呕吐活性,以及刺激胃动力的作用。