反应详情

Intermediate 1a (120 mg) prepared in Step A mentioned above was added with 10% hydrogen chloride/methanol (2 ml, Tokyo Kasei Kogyo), and the mixture was stirred at room temperature for 12 hours. The solvent was concentrated under reduced pressure, and the obtained solid was collected by filtration to obtain the title compound as hydrochloride (84 mg).

1. concentrationThe solvent was concentrated under reduced pressure
2. filtrationthe obtained solid was collected by filtration