Jump to main content
Jump to site search

Issue 21, 1975
Previous Article Next Article

Carotenoids and related compounds. Part XXXII. Synthesis of astaxanthin, phoenicoxanthin, hydroxyechinenone, and the corresponding diosphenols

Abstract

Autoxidation of 4-oxo-carotenoids in the presence of potassium t-butoxide gives the corresponding diosphenols (3,4-didehydro-3-hydroxy-4-ones). These on reduction with potassium borohydride give the 3,4-dihydroxycompounds which, on carefully controlled oxidation, yield the 3-hydroxy-4-ones.

Astaxanthin (3,3′-dihydroxy-ββ-carotene-4,4′-dione), phoenicoxanthin (3-hydroxy-β,β-carotene-4,4′-dione), and hydroxyechinenone (3-hydroxy-β,β-caroten-4-one) have been synthesised in this way from canthaxanthin (β,β-carotene-4,4′-dione), echinenone (β,β-caroten-4-one), and their 15,15′-acetylenic analogues.

Back to tab navigation

Article type: Paper
DOI: 10.1039/P19750002195
Citation: J. Chem. Soc., Perkin Trans. 1, 1975,0, 2195-2204
  •   Request permissions

    Carotenoids and related compounds. Part XXXII. Synthesis of astaxanthin, phoenicoxanthin, hydroxyechinenone, and the corresponding diosphenols

    R. D. G. Cooper, J. B. Davis, A. P. Leftwick, C. Price and B. C. L. Weedon, J. Chem. Soc., Perkin Trans. 1, 1975, 0, 2195
    DOI: 10.1039/P19750002195

Search articles by author

Spotlight

Advertisements