<scp>D</scp>-Fructose-6-phosphate Aldolase in Organic Synthesis: Cascade Chemical-Enzymatic Preparation of Sugar-Related Polyhydroxylated Compounds
作者:Alda Lisa Concia、Carles Lozano、José A. Castillo、Teodor Parella、Jesús Joglar、Pere Clapés
DOI:10.1002/chem.200802532
日期:2009.4.6
D‐Fructose‐6‐phosphate aldolase (FSA) is a key biocatalyst for the alternative synthetic construction of biologically active products with known therapeutic and research interest or novel structures relevant to drug discovery. Novel aldol addition reactions of dihydroxyacetone and hydroxyacetone to a variety of aldehydes catalyzed by FSA are presented (see scheme).
A two-step reaction sequence starting with the indium-mediatedallenylation of aldehydes with 4-bromo-2-butyn-1-ols and subsequent ozonolysis of the resulting allenylic product was developed to generate a variety of dihydroxyacetone derivatives. The regioselectivity of the indium-promoted C–C bond-forming reaction can be manipulated through hydroxy protecting groups on 4-bromo-2-butyn-1-ol, yielding