反应详情

Compound (39) (50 mg) obtained in item (6) above was dissolved in methanol (2 ml), to which was then added a 0.2M sodium methylate solution (0.2 ml) in methanol. The mixture obtained was allowed to undergo the reaction at room temperature for 20 minutes. The resulting reaction solution was neutralized with addition of ion-exchange resin, Amberlite CG-120 (H+ form) (100-200 mesh) and filtered, and the filtrate was concentrated. The solid residue obtained was washed with diethylether to give the titled compound (40) (31 mg) as an insoluble solid. Yield: 77%.

1. customThe mixture obtained
2. customthe reaction at room temperature for 20 minutes
3. customThe resulting reaction solution
4. filtrationfiltered
5. concentrationthe filtrate was concentrated
6. customThe solid residue obtained
7. washwas washed with diethylether