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

Chemical and Pharmaceutical Bulletin

Volumn 45, Issue 10, 1997, Pages 1573-1578

  Horie, Tokunaru ^a   Ohtsuru, Yoshizumi ^a   Minamimoto, Noriko ^b   Kawamura, Yasuhiko ^b   Tsukayama, Masao ^b   Yamashita, Kazuyo ^b  

^a Midori Kagaku Co Ltd   (Japan)

^b UNIVERSITY OF TOKUSHIMA   (Japan)

Author keywords

5 tosyloxyflavone; Abnormal demethylation; Anhydrous AlBr3 MeCN; Anhydrous AlCl3 MeCN; Anhydrous AlCl3 NaI MeCN; Mechanism

Indexed keywords

ACETIC ACID DERIVATIVE; ACETONITRILE; ALUMINUM CHLORIDE; ALUMINUM DERIVATIVE; CADMIUM CHLORIDE; DIMETHYL SULFOXIDE; DIOSMETIN; FLAVONE DERIVATIVE; FLAVONOID; HALIDE; SODIUM IODIDE; TOLUENESULFONIC ACID DERIVATIVE;

ALKYLATION; ARTICLE; CHEMICAL REACTION; CRYSTALLIZATION; DEALKYLATION; DEMETHYLATION; DRUG SYNTHESIS; HIGH PERFORMANCE LIQUID CHROMATOGRAPHY; PROTON NUCLEAR MAGNETIC RESONANCE; REACTION ANALYSIS; ULTRAVIOLET SPECTROSCOPY;

EID: 0030702002     PISSN: 00092363     EISSN: None     Source Type: Journal    
DOI: 10.1248/cpb.45.1573     Document Type: Article

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