[CH3:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][CH:6]=[CH:5]2.[CH3:11][CH2:12][OH:13]>CCOC(C)=O.[Pd]>[NH3:7].[CH3:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)[NH:7][CH:6]=[C:5]2[C:12]([C@H:11]1[CH2:4][CH2:5][CH2:6][NH:7]1)=[O:13]To a stirred solution of (R)-3-[(N-benzyloxycarbonylpyrrolidin-2-yl)carbonyl)]-5-methyl-1H-indole (Example 5b) in EtOAc (10 mL) was added EtOH (10 mL) and Pd/C (1.3 g). The reaction mixture was stirred at room temperature under a hydrogen atmosphere until the starting material was consumed. At this time, the reaction mixture was filtered through celite and the solvent was evaporated. The crude product was purified by column chromatography (4:1 CHCl3 : NH3 (2M in MeOH) to yield the title compound (121.5 mg, 15%) as a white solid (mp 194-196° C.).
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