Efficient Synthesis of Bibenzyl Derivatives Bearing Pyranyl Moieties: First Total Synthesis of Bauhinol D
作者:Byung-Ho Park、Yong-Rok Lee、Sung-Hong Kim
DOI:10.5012/bkcs.2011.32.2.566
日期:2011.2.20
An efficient and general synthesis of bibenzyl derivatives bearing pyranyl rings was achieved by ethylenediamine diacetate-catalyzed reactions of 3,5-dihydroxybibenzyl with $\alpha},\beta}$-unsaturated aldehydes in moderate yields. These reactions provided naturally occurring compounds 1 and 2 in single step reaction. As an application of this methodology, biologically interesting natural bauhinol D (8) was synthesized by a convergent sequence from readily available benzaldehyde and benzyl phosphonate.
通过乙二胺二醋酸盐催化3,5-二羟基双苯乙烯与α,β-不饱和醛的反应,成功实现了一种高效且通用的合成含吡喃环的双苯乙烯衍生物的方法,产率适中。这些反应在一步反应中提供了天然化合物1和2。作为该方法的应用,生物学上有趣的天然物质建筑块D(8)通过从易于获得的苯甲醛和苯基膦酸酯的收敛序列合成。