期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 13, 期 42, 页码 10461-10465出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ob01802a
关键词
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资金
- CSIR, New Delhi
- CSIR 12th FYP project [BSC-0205]
A new and efficient potassium carbonate mediated intramolecular tandem O-arylation followed by C-O bond cleavage of furano-hydroxychalcones is described. The treatment of furano-hydroxychalcones pongamol (1a) and ovalitenone (2a) with potassium carbonate in DMF led to the direct formation of the furanoflavones lanceolatin B (3ab) and pongaglabrone (4ab) in excellent yields. This is the first report on the cyclization of furano-hydroxychalcones via C-O bond cleavage (demethoxylation) to produce furanoflavonoids.
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