Stereoselective Synthesis of<i>cis</i>-2,6-Disubstituted Morpholines and 1,4-Oxathianes by Intramolecular Reductive Etherification of 1,5-Diketones
作者:Santosh J. Gharpure、Dandela Anuradha、Jonnalagadda V. K. Prasad、Pidugu Srinivasa Rao
DOI:10.1002/ejoc.201403294
日期:2015.1
A simple and efficient, Lewis acid catalysed reductive etherification strategy for the stereoselective synthesis of cis-2,6-disubstituted morpholines and 1,4-oxathianes starting from readily available 1,5-diketones has been developed. The strategy is used in the total synthesis of morpholine-based natural products (±)-chelonin A and formal total synthesis of (±)-chelonin C.
已经开发了一种简单有效的路易斯酸催化还原醚化策略,用于从容易获得的 1,5-二酮开始立体选择性合成顺式 2,6-二取代吗啉和 1,4-氧杂环丙烷。该策略用于吗啉类天然产物 (±)-chelonin A 的全合成和 (±)-chelonin C 的正式全合成。