Die Struktur des Betanins . 7. Mitteilung . Über die Konstitution des Randenfarbstoffes Betanin | Zendy

Wilcox M. E. | Zendy; Wyler H. | Zendy; Mabry T. J. | Zendy; Dreiding André S. | Zendy

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Die Struktur des Betanins . 7. Mitteilung . Über die Konstitution des Randenfarbstoffes Betanin

Author(s) -

Wilcox M. E.,

Wyler H.,

Mabry T. J.,

Dreiding André S.

Publication year - 1965

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.19650480125

Subject(s) - chemistry , betanin , diazomethane , acetylation , hydrolysis , stereochemistry , organic chemistry , biochemistry , pigment , gene

It is shown that the glucose residue in betanin is attached at the 5‐hydroxyl group (structure 2 ): Treatment of betanin with diazomethane, acidic hydrolysis and acetylation afforded 5‐O‐acetyl‐6‐O‐methyl‐neobetanidin trimethylester ( 9 ), which was cleaved by alkali. The cleavage product was esterified with methanol and oxydized by means of F RÉMY salt to 5‐hydroxy‐6‐methoxy‐2‐methoxycarbonyl‐indole ( 15 ).

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