Straightforward Pyrimidine Ring Construction: A Versatile Tool for the Synthesis of Nucleobase and Nucleoside Analogues
作者:Aélig Robin、Karine Julienne、Jean-Claude Meslin、David Deniaud
DOI:10.1002/ejoc.200500556
日期:2006.2
A general route to 1,2,4-trisubstituted pyrimidines is described in one to three steps from a common key precursor, diazadienium iodide 2. An efficient preliminary [4+2] cyclocondensation reaction between the azabutadiene building block 2 and various iso(thio)cyanates constitutes an original construction of the pyrimidine skeleton. Subsequent structural modifications on the heterocycle allow the elaboration
1,2,4-三取代嘧啶的一般路线描述为从共同的关键前体二氮二烯碘化物 2 开始的一到三个步骤。 氮杂丁二烯结构单元 2 和各种异(硫代)之间的有效初步 [4+2] 环缩合反应)氰酸盐构成嘧啶骨架的原始结构。随后对杂环的结构修改允许精心制作包括核苷类似物的 1-取代嘧啶文库。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)