Direct catalytic asymmetric synthesis of highly functionalized tetronic acids/tetrahydro-isobenzofuran-1,5-diones via combination of cascade three-component reductive alkylations and Michael-aldol reactions
作者:Dhevalapally B. Ramachary、Mamillapalli Kishor
DOI:10.1039/c003588b
日期:——
A practical and sustainable chemical process for the synthesis of highly substituted tetrahydro-isobenzofuran-1,5-diones was achieved for the first time through asymmetric cascade Michael-aldol reaction of 4-hydroxy-3-alkyl-5H-furan-2-ones with alkyl vinyl ketones in the presence of a catalytic amount of L-proline or 9-amino-9-deoxyepiquinine/TCA. In this article, we discovered for the first time the
通过4-羟基-3-烷基-5 H-呋喃-2-的不对称级联迈克尔-醛醇反应,首次实现了一种实用且可持续的化学方法,用于合成高度取代的四氢-异苯并呋喃-1,5-二酮具有烷基乙烯基酮的催化剂,在催化量的大号脯氨酸 或者 9-氨基-9-脱氧表醌/三氯乙酸。在本文中,我们首次通过动力学拆分发现了特权双环内酯的不对称合成,并展示了其在药物和天然产物合成中的合成应用。