Dichloromethane → HCID 58392267, compound

Participants

Reaction Steps

200 mg (0.51 mmol) of the compound from Example 41 were introduced into 30 ml of dichloromethane at 0° C., 127 mg (0.51 mmol) of 70% pure meta-chloroperbenzoic acid were added, and the mixture was stirred at RT overnight. 2 ml of methanol were added, and the residue after concentration was taken up in dichloromethane, washed twice with saturated aqueous sodium bicarbonate solution, water and saturated aqueous sodium chloride solution, and the organic phase was dried over magnesium sulfate, filtered and concentrated. The residue was purified by preparative HPLC (RP18 column; mobile phase: acetonitrile/water gradient with addition of 0.1% formic acid) to result in 99 mg (48% of theory) of the title compound as mixture of diastereomers.

Provenance & Evidence