反应详情

To a solution of 5-methyl-4-[1-(3-trifluoromethyl-phenylcarbamoyl)-1H-indol-5-yloxy]-5,7-dihydro-pyrrolo[3,4-d]pyrimidine-6-carboxylic acid tert-butyl ester in DCM (20 mL), TFA (20 ml, 134 mmol) is added at 0° C. After 30 min the reaction is warmed to rt. At this point, the reaction is evaporated and the crude product is dissolved in EtOAc. A Few drops of NH4OH are added to freebase the amine and the whole mixture is then evaporated. The crude product is added to a silica gel column and is eluted with DCM/MeOH/NH4OH (100:0:0 to 93:6:1) to give racemic 5-(5-Methyl-6,7-dihydro-5H-pyrrolo[3,4-d]pyrimidin-4-yloxy)-indole-1-carboxylic acid (3-trifluoromethyl-phenyl)-amide. MS (ESI) m/z 454.9 (M+1); 1H NMR (400 MHz, MeOD) δ ppm 8.50 (s, 1 H) 8.33 (s, 1 H) 8.06 (s, 1 H) 7.94 (br. S., 2 H) 7.57 (s, 1 H) 7.42 (br. S., 2 H) 7.12 (d, J=9.09 Hz, 1 H) 6.75 (d, J=3.03 Hz, 1 H) 4.70 (br. S., 1 H) 4.10-4.22 (m, 2 H) 1.60 (d, J=6.57 Hz, 3 H). Racemate is then separated using chiral HPLC (IA column; 40% heptane, 60% Ethanol) to give the corresponding enantiomers D-1 and D-2.

1. customAt this point, the reaction is evaporated
2. dissolutionthe crude product is dissolved in EtOAc
3. additionA Few drops of NH4OH are added
4. customthe whole mixture is then evaporated
5. additionThe crude product is added to a silica gel column
6. washis eluted with DCM/MeOH/NH4OH (100:0:0 to 93:6:1)