β-Oxy-α-diazo carbonyl compounds. III. Rh2(AcO)4 mediated decomposition of β-acetoxy-α-diazo esters. Application to the synthesis of natural 3-deoxy-2-keto aldonic acids (KDO and DAH)
作者:Fidel J. López-Herrera、Francisco Sarabia-García
DOI:10.1016/s0040-4039(00)73473-3
日期:1994.9
β-Acetoxy-α-diazo esters yield α-enol acetate esters quantitatively by reaction with dirhodium tetraacetate. The reaction was used to prepare the major natural compounds 3-Deoxy-D-arabino-2-Heptulosonic acid (DAH, 1) and 3-Deoxy-D-manno-2-Octulosonic acid (KDO, 2) by conversion of the enolacetate function to the corresponding ketone.