反应详情

To a MeOH (7 ml) solution of the compound (0.660 g) obtained in Example 19-(2), 10% Pd—C (0.330 g) and an aqueous solution of 1N HCl (14 ml) were added and the mixture was stirred at room temperature for 5 hours in a hydrogen gas atmosphere. The insoluble matter was filtered off and the filtrate was concentrated to give the titled compound (0.715 g, brown amorphous.)

1. filtrationThe insoluble matter was filtered off
2. concentrationthe filtrate was concentrated