Polycyclic<i>N</i>-Hetero Compounds; XXXIX: A Facile Synthesis of 1,2,4,5-Tetrahydro-[1]benzoxepino[4,5-<i>e</i>]imidazo[1,2-<i>c</i>]pyrimidines via Ring Closure of 4-(2-Hydroxyalkylamino)-5,6-dihydro-[1]benzoxepino[5,4-<i>d</i>]pyrimidines
作者:Tomohisa Nagamatsu、Shogo Tsurubayashi、Kenji Sasaki、Takashi Hirota
DOI:10.1055/s-1991-26450
日期:——
The first example of the unknown [1]benzoxepino[4,5-e]imidazo[1,2-c]pyrimidine ring system is demonstrated as a new class of potent anit-platelet aggregation agents. That is, the 1,2,4,5-tetrahydro-[1]benzoxepino[4,5-e]imidazo[1,2-c]pyrimidines 11a-c were prepared by ring closure of 4-(2-hydroxyalkylamino)-5,6-dihydro-[1]benzoxepino[5,4-d]pyrimidines 10a-c with phosphoryl chloride.
首次发现了一种未知结构的[1]苯并氧二氮杂[4,5-e]咪唑并[1,2-c]嘧啶环系化合物,并将其作为一类新型强效抗血小板聚集剂。具体而言,通过4-(2-羟基烷基氨基)-5,6-二氢[1]苯并氧二氮杂[5,4-d]嘧啶类化合物10a-c与磷酰氯进行环合反应,合成了1,2,4,5-四氢[1]苯并氧二氮杂[4,5-e]咪唑并[1,2-c]嘧啶类化合物11a-c。