Studies of the selective O-alkylation and dealkylation of flavonoids. XXIII. Demethylation behaviors of 6-hydroxy-4',7-dimethoxy-5-tosyloxyflavones with anhydrous aluminum halides in acetonitrile

DOI: 10.1248/cpb.45.1573

Source and publish data:

Chemical and Pharmaceutical Bulletin p. 1573 - 1578 (1997)

Update date:2022-07-29

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Authors:

Horie, Tokunaru

Ohtsuru, Yoshizumi

Minamimoto, Noriko

Kawamura, Yasuhiko

Tsukayama, Masao

Yamashita, Kazuyo

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Article abstract of DOI:10.1248/cpb.45.1573

In the demethylation of 6-hydroxy-3,4',7-trimethoxy-5-tosyloxyflavone (1) with anhydrous aluminum bromide (AlBr₃) or anhydrous aluminum chloride- sodium iodide (AlCl₃-NaI) in acetonitrile, the elimination of the 5-tosyloxy group proc

Full text of DOI:10.1248/cpb.45.1573

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