Premium
Recherches sur la biochimie des champignons inférieurs VIII . Synthèse chimique de pigments diquinoniques
Author(s) -
Kalamar Julius,
Steiner Eric,
Charollais Etienne,
Posternak Théodore
Publication year - 1974
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.19740570809
Subject(s) - chemistry , pigment , quinone , biphenyl , stereochemistry , organic chemistry
New simplified syntheses of two natural p ‐diquinonic pigments, phoenicine and oosporeine, have been described. By similar procedures, the syntheses of two other related diquinones have been carried out: 3,3′,6,6′‐tetrahydroxy‐biphenyl‐di‐ p , p ′‐quinone and 3,3′,6,6′‐tetrahydroxy‐4‐methyl‐biphenyl‐di‐ p , p ′‐quinone. The latter structure had been assigned to pyxiferine, which had been reported to be contained in the lichen Pyxine coccifera .