Pyrrolo[2,1-c][1,2,4]triazines from 2-diazopyrroles: synthesis and antiproliferative activity
作者:Patrizia Diana、Paola Barraja、Antonino Lauria、Alessandra Montalbano、Anna Maria Almerico、Gaetano Dattolo、Girolamo Cirrincione
DOI:10.1016/s0223-5234(02)01339-9
日期:2002.3
Pyrrolo[2,1-c][1,2,4]triazines 4a-g were directly obtained from the reaction of 2-diazopyrroles 1a and b with the sodium salts of beta-diketones, beta-carbonitriles, and beta-dinitriles. Only when the 2-diazopyrroles were coupled with ethyl cyanoacetate, it was possible to isolate, together with the pyrrolotriazines, the intermediate hydrazones 3 which, in turn, cyclised to the title ring system. Pyrrolotriazines
吡咯并[2,1-c] [1,2,4]三嗪4a-g直接从2-重氮吡咯1a和b与β-二酮,β-腈和β-二腈的钠盐反应而获得。仅当2-重氮吡咯与氰基乙酸乙酯偶联时,才可能与吡咯并三嗪一起分离出中间3,后者又环化成标题环系统。美国国家癌症研究所评估了吡咯并三嗪4a-e对60种人类癌细胞系的细胞毒性活性,其中一些表现出对多种癌细胞系生长的抑制作用,通常在10(-5)M水平在某些情况下,浓度为微摩尔。