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2‐Hydroxytorularhodin, a New Xanthophyll from the Red Yeast Sporobolomyces coprosmae
Author(s) -
Weber Roland W. S.,
Madhour Abderrahim,
Anke Heidrun,
Mucci Adele,
Davoli Paolo
Publication year - 2005
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.200590239
Subject(s) - chemistry , yeast , carotenoid , hydroxylation , xanthophyll , stereochemistry , biochemistry , enzyme
A new hydroxylated carotenoic acid was isolated from the red yeast Sporobolomyces coprosmae and unambiguously identified as 2‐hydroxytorularhodin ( 1 ), i.e. , ( all‐E )‐3′,4′‐didehydro‐2‐hydroxy‐ β,ψ ‐caroten‐16′‐oic acid, by application of extensive 1D and 2D NMR techniques (gCOSY, gHSQC, gHMBC, DQS, gTOCSY, and ROESY). Hydroxylation of carotenoids at C(2) is uncommon in nature, very rare in fungi, and unprecedented for torularhodin.