[H-].[Na+].[CH3:3][N:4]1[CH2:17][CH2:16][C:7]2[NH:8][C:9]3[CH:10]=[CH:11][C:12]([CH3:15])=[CH:13][C:14]=3[C:6]=2[CH2:5]1.Br[CH:19]1[CH2:23][CH2:22][N:21]([CH3:24])[C:20]1=[O:25]>CN(C=O)C>[CH3:3][N:4]1[CH2:17][CH2:16][C:7]2[N:8]([CH:19]3[CH2:23][CH2:22][N:21]([CH3:24])[C:20]3=[O:25])[C:9]3[CH:10]=[CH:11][C:12]([CH3:15])=[CH:13][C:14]=3[C:6]=2[CH2:5]1A suspension of NaH (36 mg, 1.5 mmol) and 2,3,4,5-tetrahydro-2,8-dimethyl-1H-pyrido[4,3-b]indole (100 mg, 0.5 mmol) in DMF (5 mL) was stirred at 0° C. 3-bromo-1-methylpyrrolidin-2-one (176 mg, 1.0 mmol) in DMF (3 mL) was added dropwise to the reaction mixture which was stirred at RT for 12 hours. After completion of the reaction, the reaction mixture was quenched with ice cold water and the product extracted with Ethyl Acetate. The organic layer isolated was washed with water and dried over sodium sulfate. The solvent was removed under reduced pressure and the crude obtained was purified by column chromatography to obtain 20 mg of 3-(1,2,3,4-tetrahydro-2,8-dimethylpyrido[4,3-b]indol-5-yl)-1-methylpyrrolidin-2-one. 1H NMR (CDCl3) FREEBASE 7.10 (s, 1H), 7.05 (d, 1H), 6.92 (d, 1H), 5.05 (m, 1H), 4.80 (m, 1H), 3.80 (m, 1H), 3.50 (m, 2H), 3.40 (m, 1H), 3.20 (m, 3H), 3.0 (s, 3H), 2.80 (s, 3H), 2.40 (s, 3H), 2.20 (m, 2H).
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