Polycyclic<i>N</i>-Hetero Compounds. XLII: Convenient Syntheses of 6, 7-Dihydro-5<i>H</i>-pyrido[2,3-<i>b</i>]pyrimido[4,5-<i>d</i>]azepine as a Novel Polyheterocyclic Ring System and Its 4-Substituted Derivatives
作者:Tomohisa Nagamatsu、Yoshiji Hantani、Mikiko Takaishi、Kenji Sasaki、Takashi Hirota
DOI:10.1055/s-1991-26613
日期:——
A convenient synthetic route for the syntheses of 6,7-dihydro-5H-pyrido[2, 3-b]pyrimido[4,5-d]azepine and its 4-substituted derivatives starting from ethyl 2-aminopyridine-3-carboxylate is described as the fist example of the unknown ring system. A new class of anti-platelet aggregation activity for them against collagene-induced aggregation of rabbit blood platelet in vitro was found.
作为未知环系统的第一个实例,介绍了一条从 2-aminopyridine-3-carbonylate 乙酯开始合成 6,7- 二氢-5H-吡啶并[2,3-b]嘧啶并[4,5-d]氮杂卓及其 4-取代衍生物的简便合成路线。研究发现,它们对体外胶原蛋白诱导的兔血小板聚集具有一类新的抗血小板聚集活性。