Methyl 6-(5-benzyloxy-6-chloro-2-phenylindol-1-ylmethyl)pyridine-2-carboxylate → Methyl 6-(6-chloro-5-hydroxy-2-phenylindol-1-ylmethyl)pyridine-2-carboxylate

関与物質

反応手順

A solution of methyl 6-(5-benzyloxy-6-chloro-2-phenylindol-1-ylmethyl)pyridine-2-carboxylate (372 mg) in trifluoroacetic acid/water/dimethyl sulfide (95/5/10, 7.7 mL) was stirred at room temperature for 80 hours. The reaction mixture was concentrated under reduced pressure. A saturated aqueous sodium hydrogen carbonate solution (20 mL) was added to the residue and this resulting mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was triturated in dichloromethane/hexane (2/1). The precipitate was collected by filtration, washed with dichloromethane/hexane (2/1), and air-dried to obtain the title compound (213 mg).

情報源と証拠