反应详情

温度

25 °C

A solution (0.04 M) of 3-cyclohexyl-1-[2-(dimethylamino)-2-oxoethyl]-2-(1,3-oxazol-5-yl)-1H-indole-6-carboxylic acid (from Step 6) in DMF was treated with DIPEA (3 eq.), HATU (2 eq.) and ethyl (2E)-3-(4-{[(1-aminocyclopentyl)carbonyl]amino}phenyl)acrylate (from Example 1, Step 7, 1.1 eq.). The solution was stirred at 25° C. for 12 h and then evaporated in vacuo. The residual material was purified by chromatography on silica gel (PE:EtOAc, 8:2, then EtOAc:PE 9:1). The product fractions were evaporated and the material obtained was then dissolved in THF/MeOH (1:1). The resulting solution was treated with LiOH monohydrate (3 eq.) and stirred at RT overnight. The product was isolated by preparative HPLC (stationary phase: Waters Xterra C18 19×150 mm, 5 micron; flow 20 mL/min). After lyophilisation the product was obtained as a colourless amorphous solid (98%).

1. customevaporated in vacuo
2. customThe residual material was purified by chromatography on silica gel (PE
3. customThe product fractions were evaporated
4. customthe material obtained
5. stirringstirred at RT overnight
6. customThe product was isolated by preparative HPLC (stationary phase: Waters Xterra C18 19×150 mm, 5 micron; flow 20 mL/min)