A Microwave-Assisted Synthesis of (<i>S</i>)-<i>N</i>-Protected Homoserine γ-Lactones from <scp>l</scp>-Aspartic Acid
作者:Suneel P. Singh、Alex Michaelides、A. Rod Merrill、Adrian L. Schwan
DOI:10.1021/jo2008093
日期:2011.8.19
A three-pot preparation of (S)-N-protected homoserine γ-lactones is presented. Conversion of N-protected l-aspartic acid to an oxazolidinone is followed by selective reduction/acid-catalyzed cyclization to deliver the lactones. Microwave irradiation proved valuable for improving the latter reaction steps in some cases.
提出了一种由三锅制备的(S)-N-保护的高丝氨酸γ-内酯。将N-保护的1-天冬氨酸转化为恶唑烷酮,然后进行选择性还原/酸催化的环化以递送内酯。在某些情况下,微波辐射被证明对于改进后面的反应步骤很有价值。