(E/Z)-isomerization of (all-E)-5,6-Diepikarpoxanthin

Péter Molnár, József Deli, Gyula Tóth, Adrian Háberli, Hanspeter Pfander

Research output: Article

4 Citations (Scopus)


(all-E)-5,6-Diepikarpoxanthin (=(all-E,3S,5S,6S,3′R)-5,6-dihydro-β,β- carotene-3,5,6,3′-tetrol; 1) was submitted to thermal isomerization and I2-catalyzed photoisomerization. The structures of the main products, i.e. (9Z)- (2), (9′Z)- (3), (13Z)- (4), (13′Z)- (5), and (15Z)-5,6-diepikarpoxanthin (6), were determined by their UV/VIS, CD, 1H-NMR, and mass spectra. In addition, (9Z,13′Z)- or (13Z,9′Z)- (7), (9Z,9′Z)- (8), and (9Z,13Z)- or (9′Z,13′Z)-5,6-diepikarpoxanthin (9) were tentatively identified as minor products of the I2-catalyzed photoisomerization.

Original languageEnglish
Pages (from-to)1327-1339
Number of pages13
JournalHelvetica Chimica Acta
Issue number5
Publication statusPublished - jún. 18 2002

ASJC Scopus subject areas

  • Catalysis
  • Biochemistry
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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