反应详情

温度

60 °C

In 5 ml of methanol was dissolved 100 mg of 3β-benzoyloxy-21,21-dimethoxy-20-methyl-1α-(N-methylcarbamoyl)oxypregna-5,7-diene, followed by addition of 5 ml of water and 100 mg of copper sulfate. The mixture was stirred in an atmosphere of argon gas at a temperature of 60° C. for 7 hours. The reaction mixture was then worked up in the same manner as Example 156 to give 60 mg of 3β-benzoyloxy-1α-(N-methylcarbamoyl)oxypregna-5,7-diene-20-carbaldehyde showing the following physical properties.