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Isolierung und Struktur von Pteridinen (Lumazinen) aus Russula sp. (Täublinge; Basidiomycetes )
Author(s) -
Iten Peter Xaver,
MärkiDanzig Hana,
Koch Herbert,
Eugster Conrad Hans
Publication year - 1984
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.19840670223
Subject(s) - chemistry , ribitol , stereochemistry , biochemistry , enzyme
Isolation and Structure Elucidation of Pteridines (Lumazines) from Russula sp. (Basidiomycetes) Extensive chromatogaphic separations and spectroscopic investigations have led to the isolation and identification of several water‐soluble pteridines from Russula sp. , the so‐called russupteridines, namely: 1‐(5‐amino‐2‐6‐dioxo‐1,2,3,6‐tetrahydeopyrimidin‐4‐yl)amino‐1‐deoxy‐ D ‐ribitol ( 1 ; a pro‐lumazine; first identification in a basidiomycete (; l‐deoxy‐l‐(6‐methyl‐2‐4,7‐trioxo‐1,2,3,4,7,8‐hexahydro‐pteridin‐8‐yl)‐ D ‐ribitol ( 3 ) and l‐deoxy‐1‐(2,4,7‐trioxo‐1,2,3,4,7,8‐hexahydeopteridin‐8‐yl)‐ D ‐ribitol ( 4 ); both compounds found for the first time in higher fungi; they belong to the components with the strongest violet‐blue fluorescence in Russula sp. ; riboflavine ( 6 ; now recognized as an important yellow colorant in a great many of Russula sp. ); russupteridine‐yellow I (= l‐(6‐amino‐7‐( N ‐fromylimino)‐2,4‐dioxo‐1,2,3,4,7,8‐hexahydropteridin‐8‐yl)‐1‐deoxy‐ D ‐ribitol; 5 ; a component with very strong fluorescence; the first derivative of the novel 6,7‐diamino‐lamazine); russupteridine‐yellow IV (= l‐deoxy‐1‐)(2,6,8‐trioxo‐2,4,5,6,7,8‐hexahydro‐1 H ‐imidazolo[4,5‐ g ]pteridin‐4‐yl)‐ D ‐ribitol (7)). Two further yellow russupteridines (yellow II and Yellow V) with very strong fluorescence have been isolated and characterized.