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Über einige cis ‐Formen des Canthaxanthins
Author(s) -
Gansser Ch.,
Zechmeister L.
Publication year - 1957
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19570400623
Subject(s) - canthaxanthin , chemistry , stereochemistry , carotenoid , astaxanthin , biochemistry
The fungal carotenoid, canthaxanthin, C 40 H 52 O 2 (4,4′‐diketo‐β‐carotene), was converted by some thermal and photochemical treatments into a stereoisomeric mixture that was resolved chromatographically. Thus, six cis forms, termed “neo‐canthaxanthins A‐F”, were obtained, A–C in crystalline form, the latter being identical with central‐mono cis ‐canthaxanthin prepared by Isler et al . by total synthesis. The spectral characteristics of these stereoisomers have been studied and some tentative configurational assignments proposed.