[CH3:1][S:2]([C:5]1[CH:6]=[CH:7][C:8]([N+:11]([O-])=O)=[N:9][CH:10]=1)(=[O:4])=[O:3]>CO.[Pd]>[CH3:1][S:2]([C:5]1[CH:6]=[CH:7][C:8]([NH2:11])=[N:9][CH:10]=1)(=[O:4])=[O:3]A mixture of 117b (2 g, 10 mmol), MeOH (10 mL), Pd/C (120 mg) in methanol (8 mL) was stirred fat 25° C. under H2 (50 Psi) overnight. The Pd/C was removed by filtration and the filtrate was concentrated under reduced pressure to give 117c (1.7 g, 98%). MS: [M+H]+ 173.
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