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Synthesis 2014; 46(05): 635-645
DOI: 10.1055/s-0033-1340555
DOI: 10.1055/s-0033-1340555
paper
Total Synthesis of 1,2,5,6-Tetrahydro-2,6-cyclo-γ-carotene-1,5-diol, an Oxidation Product of γ-Carotene
Further Information
Publication History
Received: 04 November 2013
Accepted after revision: 10 December 2013
Publication Date:
21 January 2014 (online)
Abstract
1,2,5,6-Tetrahydro-2,6-cyclo-γ-carotene-1,5-diol, an oxidation product of the pro-vitamin A food carotenoid γ-carotene, was synthesized by a C15 + C10 + C15 double Wittig coupling strategy. The total synthesis involved a key C15-dihydroxyaldehyde synthon derived from (E/Z)-citral, a protected C10-Wittig salt, and (β-ionylideneethyl)triphenylphosphonium chloride (C15-Wittig salt). This synthetic route provides novel access to an oxidation product of γ-carotene that could be potentially formed in humans or biological systems as a consequence of metabolic oxidation.
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