反应详情

Methanesulfonic acid (0.006 ml, 0.09 mmol) was added to a 2-propanol (0.5 ml) solution of the compound (54 mg, 0.09 mmol) obtained in Example 70 and the resulting mixture was dissolved by heating. After stirring at room temperature for 3 days, the precipitate was collected by filtration to give 27 mg (43%) of the title compound as a solid.

1. dissolutionthe resulting mixture was dissolved
2. temperatureby heating
3. filtrationthe precipitate was collected by filtration