Efficient Synthesis of Substituted Pyranoquinolinones from 2,4-Dihydroxyquinoline: Total Synthesis of Zanthosimuline, <b><i>cis</i></b>-3<b>′</b>,4<b>′</b>-Dihydroxy-3<b>′</b>,4<b>′</b>-dihydroflindersine, and Orixalone D
作者:Yong Lee、Xue Wang
DOI:10.1055/s-2007-983893
日期:2007.10
A convenient and efficient synthesis of pyranoquinoli-nones was achieved using the ethylenediamine diacetate catalyzed reactions of 2,4-dihydroxyquinoline and a variety of α,β-unsaturated aldehydes in good yield. The key feature of these reactions is the formal [3+3] cycloaddition. This new methodology was applied successfully to the total synthesis of naturally occurring pyranoquinolinone alkaloids
使用乙二胺二乙酸酯催化的 2,4-二羟基喹啉和多种 α,β-不饱和醛的反应以良好的收率实现了一种方便高效的吡喃喹啉酮合成。这些反应的关键特征是正式的 [3+3] 环加成。这种新方法成功地应用于天然存在的吡喃喹啉酮生物碱、zanthosimuline、CIS-3',4'-dihydroxy-3',4'-dihydroflindersine 和 orixalone D 的全合成。