One‐Step Synthesis of 2,5‐Diaminoimidazoles and Total Synthesis of Methylglyoxal‐Derived Imidazolium Crosslink (MODIC)
作者:Venkata R. Sabbasani、Kung‐Pern Wang、Matthew D. Streeter、David A. Spiegel
DOI:10.1002/anie.201911156
日期:2019.12.19
compounds spontaneously adopt the non-aromatic 4(H) tautomer. The reaction works successfully on both cyclic and acyclic amino ketone starting materials, as well as a range of substituted guanylhydrazines. Following optimization, the method was applied to the efficient synthesis of the advanced glycation end product (AGE) methylglyoxal-derived imidazolium crosslink (MODIC). We expect that this method
在这里,我们描述了合成 2,5-二氨基咪唑的一般方法,该方法涉及 α-氨基酮和取代的脒基肼之间的热反应,无需添加剂。作为获取 2,5-二氨基咪唑基序的少数已知方法之一,我们的方法极大地扩展了已报道的二氨基咪唑的数量,并进一步支持了我们之前的观察结果,即这些化合物自发地采用非芳香族 4(H) 互变异构体。该反应适用于环状和无环氨基酮起始原料以及一系列取代的脒基肼。经过优化,该方法应用于高级糖基化终产物(AGE)甲基乙二醛衍生咪唑鎓交联剂(MODIC)的高效合成。我们预计该方法将能够快速获得多种具有生物学重要意义的含 2,5-二氨基咪唑的产品。