Synthesis of Dioxabicyclo[3.2.1]octane Core of the Zaragozic Acids
作者:Masayoshi Tsubuki、Hiroyuki Okita、Toshio Honda
DOI:10.3987/com-05-s(t)71
日期:——
Synthesis of the bicyclic core of zaragozicacids employing chiral furylglycerol (6) is described. Key steps are stereoselective construction of the C4 to C6 carbon centers by syn-dihydroxylation of alkene followed by reduction of carbonyl group in pyranone (8), introduction of ethynyl moiety as a carboxylic acid synthon at C3 by nucleophilic addition of lithium trimethylsilylacetylide to aldehyde