C(OC([NH:11][C@H:12]([CH3:22])[CH2:13][CH2:14][C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16])=O)C1C=CC=CC=1>CO.[Pd]>[NH2:11][C@H:12]([CH3:22])[CH2:13][CH2:14][C:15]([O:17][C:18]([CH3:21])([CH3:20])[CH3:19])=[O:16]To a solution of tert-butyl (4R)-4-{[(benzyloxy)carbonyl]amino}pentanoate (3.5 g, 11.4 mmol) in methanol (35 ml) was added Pd—C (0.7 g) and the mixture was stirred under a hydrogen atomosphere for 3 hours. Catalyst was-removed by filtration and the solvent was removed in vacuo to give tert-butyl(4R)-4-aminopentanoate (2.1 g).
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