Reaction of methyl (2E)-3-dimethylamino-2-(1H-indol-3-yl)-propenoate with ureas: facile entry into the polycyclic meridianin analogues with uracil structural unit
作者:Zdenko Časar、David Bevk、Jurij Svete、Branko Stanovnik
DOI:10.1016/j.tet.2005.05.075
日期:2005.8
propenoate with various (thio)ureas in the presence of an acid 2-(1H-indol-3-yl)-3-(3-substituted(thio)ureido)propenoates were obtained in high yields. A base promoted cyclization of these (thio)ureidopropenoate derivatives afforded 5-(indol-3-yl)-3-substituted-pyrimidine-2,4-diones which represent a new family of meridianine analogues.
使用N,N-二甲基甲酰胺二甲基乙缩醛(DMFDMA)从3-吲哚乙酸分两步简单有效地制备了(2 E)-3-二甲基氨基-2-(1 H-吲哚-3-基)-丙酸甲酯。在酸2-(1 H-吲哚-3-基)存在下用各种(硫代)脲处理(2 E)-3-二甲基氨基-2-(1 H-吲哚-3-基)-丙酸酯以高收率获得了-3-(3-取代的(硫代)脲基)丙酸酯。通过碱促进这些(硫代)脲基丙烯酸酯衍生物的环化,得到5-(吲哚-3-基)-3-取代的嘧啶-2,4-二酮,其代表子午线类似物的新家族。