反应详情

The compound (290.8 mg) obtained in Example 77-4 was dissolved in chloroform (6 ml). The reaction solution was added with manganese dioxide (1.4331 g) and the whole was stirred at room temperature for 22 hours. The catalyst was filtrated out through Celite. The filtrate was concentrated under reduced pressure, thereby obtaining the subject compound (256.4 mg) as a colorless oily substance.

1. filtrationThe catalyst was filtrated out through Celite
2. concentrationThe filtrate was concentrated under reduced pressure