Total Synthesis of 1,2,5,6-Tetrahydro-2,6-cyclo-γ-carotene-1,5-diol, an Oxidation Product of γ-Carotene
作者:Frederick Khachik、Kristine Crawford、Eugene Mazzola
DOI:10.1055/s-0033-1340555
日期:——
1,2,5,6-Tetrahydro-2,6-cyclo-gamma-carotene-1,5-diol, an oxidation product of the pro-vitamin A food carotenoid.-carotene, was synthesized by a C-15 + C-10 + C-15 double Wittig coupling strategy. The total synthesis involved a key C15-dihydroxyaldehyde synthon derived from (E/Z)-citral, a protected C-10-Wittig salt, and (beta-ionylideneethyl) triphenylphosphonium chloride (C-15-Wittig salt). This synthetic route provides novel access to an oxidation product of gamma-carotene that could be potentially formed in humans or biological systems as a consequence of metabolic oxidation.