申请人:Sanofi, S.A.
公开号:US04523013A1
公开(公告)日:1985-06-11
2-Acyl-1,3,4,6,7,11b-hexahydro-2H-pyrazino-[2,1-a]-4-isoquinoleinones having anthelmintic activity of the formula ##STR1## are prepared from 4-acyl-2,6-dioxopierazines by reaction with a phenethyl halide, selective reduction of one of the oxo groups and cyclization, by the novel intermediates of formula ##STR2## in which Y represents O or H, OH.
具有驱虫活性的2-酰基-1,3,4,6,7,11b-六氢-2H-吡嗪-[2,1-a]-4-异喹啉酮的化学式为##STR1##,通过与苯乙基卤反应,选择性还原其中一个羰基,然后环化,由化学式为##STR2##的新中间体制备而成,其中Y代表O或H,OH。