Multiple-step, one-pot synthesis of 2-substituted-3-phosphono-1-thia-4-aza-2-cyclohexene-5-carboxylates and their corresponding ethyl esters
作者:Dunxin Shen、Kenneth Hensley、Travis T. Denton
DOI:10.1016/j.bmcl.2018.01.052
日期:2018.2
The multiple-step, one-pot procedure for a series of 2-substituted-3-phosphono-1-thia-4-aza-2-cyclohexene-5-carboxylates, analogues of the natural, sulfur amino acid metabolite lanthionine ketimine (LK), its 5-ethyl ester (LKE) and 2-substituted LKEs is described. Initiating the synthesis with the Michaelis-Arbuzov preparation of α-ketophosphonates allows for a wide range of functional variation at
一系列2-取代的3-膦酰基-1-硫杂-4-硫杂-2-氮杂-2-环己烯-5-羧酸酯(天然的,硫代氨基酸代谢产物羊毛硫氨酸酮亚胺(LK)的类似物),描述了其5-乙酯(LKE)和2-取代的LKE。用Michaelis-Arbuzov制备的α-酮膦酸酯开始合成反应,可在产物的2位上产生广泛的功能变化。合成了九种新化合物,总收率为40%至62%。另外,新制备的2-异丙基-LK-P,2-正己基-LKE-P和2-乙基-LKE显示出比母体化合物LKE更好地刺激培养细胞中的自噬。