反应详情

Under a nitrogen atmosphere 4-methoxy-1-methyl-1H-indole-2-carbonyl chloride (described in example 2g) (0.048 mmol, 10.64 mg) was added to a solution of 2-amino-5-(8-methyl-3-((trans)-4-(4-methylpiperazin-1-yl)cyclohexyl)imidazo[1,5-a]pyrazin-1-yl)phenol (116 mg impure material) and N,N-diisopropylethylamine (0.145 mmol, 24 μl) in dichloromethane at 0° C. The mixture was stirred at room temperature for one hour. Purification by column chromatography (silica gel; gradient of dichloromethane to dichloromethane/methanol 5/1) followed by purification with HPLC (column: X-bridge; eluens acetonitrile/methanol/water with constant 0.003M trifluoroacetic acid). Proper fractions were collected and basified with aqueous sodium carbonate, extracted with dichloromethane, organic layer dried (Na2SO4) and concentrated in vacuo to give N-(2-hydroxy-4-(8-methyl-3-((trans)-4-(4-methylpiperazin-1-yl)cyclohexyl)imidazo[1,5-a]pyrazin-1-yl)phenyl)-4-methoxy-1-methyl-1H-indole-2-carboxamide (7 mg)

1. customPurification by column chromatography (silica gel; gradient of dichloromethane to dichloromethane/methanol 5/1)
2. customfollowed by purification with HPLC (column: X-bridge; eluens acetonitrile/methanol/water with constant 0.003M trifluoroacetic acid)
3. customProper fractions were collected
4. extractionextracted with dichloromethane, organic layer
5. dry with materialdried (Na2SO4)
6. concentrationconcentrated in vacuo