反应详情

1.2 g (2.9 mmol) of the compound of Example 70, 0.31 g (2.9 mmol) of benzylamine and 0.2 ml (2.9 mmol) of acetic acid were dissolved in 50 ml of ethanol and, at room temperature, 0.18 g (2.9 mmol) of sodium cyanoborohydride was added a little at a time. The mixture was stirred for 16 h and then concentrated under reduced pressure, and the organic phase was dried and finally concentrated again under reduced pressure. The residue was purified by chromatography on silica gel (mobile phase: methylene chloride/methanol=5:1) to yield 0.87 g (60%) of the product.

1. concentrationconcentrated under reduced pressure
2. customthe organic phase was dried
3. concentrationfinally concentrated again under reduced pressure
4. customThe residue was purified by chromatography on silica gel (mobile phase: methylene chloride/methanol=5:1)