The Dihydroxyacetone Unit-A Versatile C_3 Building Block in Organic Synthesis

摘要

Nature employs dihydroxyacetone phosphate (DHAP) as the donor component in various enzyme-catalyzed aldol reactions.Probably the most significant example in this regard is photosynthesis,in which D-glucose,the most widespread natural product,is formed in just a few steps from DHAP.In recent years a number of synthetic equivalents of DHAP have been reported that deserve particular attention,as their applicability in organic synthesis is not limited to (stereoselective) aldol reactions.The power of these reagents has also been demonstrated convincingly in numerous other asymmetric electrophilic a-substitution reactions in target-oriented syntheses.Furthermore,the related 1,3-dioxins are useful equivalents of 2-substituted acrolein derivatives.