Department of Chemistry, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain.
Org Lett. 2013 Apr 5;15(7):1448-51. doi: 10.1021/ol400136y. Epub 2013 Mar 11.
A stereoselective synthesis of L-carbidopa in seven steps and 50% overall yield from commercial compounds is described. The key step involves a highly enantioselective α-amination reaction of an acyclic β-ketoester with di-tert-butyl azodicarboxylate induced by europium and (R,R)-diphenyl-pybox.
本文描述了一种从商业化合物出发经 7 步反应以 50%总收率立体选择性合成 L-卡比多巴的方法。关键步骤是在铕和(R,R)-二苯基脯氨醇的作用下,通过非环β-酮酯与二(叔丁基)偶氮二甲酸酯的高对映选择性α-胺化反应。