反应详情

The product from step (vi) (0.3 g) and N,N-carbonyldiimidazole (0.19 g) were dissolved in DMF (20 ml) and the solution stirred at room temperature for 1 hour. The product from step (iv) (0.42 g) and triethylamine (0.32 ml) were added. After 20 hours water and ether were added, the organic phase separated, dried and concentrated to a gum which was purified by chromatography (dichloromethane:methanol, 93:7) to give the titled product as a solid (0.38 g).

1. customthe organic phase separated
2. customdried
3. concentrationconcentrated to a gum which
4. customwas purified by chromatography (dichloromethane:methanol, 93:7)