反应详情

To a stirred suspension of 7-[2-hydroxy-3-({[3-(trifluoromethyl)phenyl]methyl}-amino)propoxy]-3-(4-methoxyphenyl)chromen-4-one (38 mg, 0.076 mmol) in methylene chloride at ° C. was added boron tribromide (1M, 0.38 ml). The resulting mixture was stirred at room temperature for 4 hours, then the solvent removed under reduced pressure. The residue was purified by preparative thin layer chromatography, eluting with 10% methanol/dichloromethane, to provide 3-(4-hydroxyphenyl)-7-[2-hydroxy-3-({[3-(trifluoromethyl)phenyl]methyl}amino)propoxy]chromen-4-one.

1. customthe solvent removed under reduced pressure
2. customThe residue was purified by preparative thin layer chromatography
3. washeluting with 10% methanol/dichloromethane