Direct Synthesis of β-Hydroxy-α-amino Acids <i>via</i> Diastereoselective Decarboxylative Aldol Reaction
作者:Yuttapong Singjunla、Jérôme Baudoux、Jacques Rouden
DOI:10.1021/ol402805f
日期:2013.11.15
A straightforward metal-free synthesis of anti-β-hydroxy-α-amino acids is described. The organic base-mediated decarboxylative aldol reaction of cheap, readily available α-amidohemimalonates with various aldehydes afforded under very mild conditions anti-β-hydroxy-α-amido esters in high yields and complete diastereoselectivity. Simple one-pot subsequent transformations enabled the corresponding an
描述了抗-β-羟基-α-氨基酸的直接无金属合成。廉价,易于获得的α-氨基半水酸酯与各种醛的有机碱介导的脱羧醛醇缩合反应,在非常温和的条件下以高收率和完全的非对映选择性提供了抗-β-羟基-α-酰胺基酯。简单的一锅后继转化使得可以使用差向异构化条件直接获得相应的抗-β-羟基-α-氨基酸,或在一些示例中,其顺式非对映异构体。