1-[3(S)-(benzyloxyformamido)-2(R)-hydroxy-4-phenylbutyl]-N-tert.butyl-2(S)-piperidinecarboxamide → 1-[3 (S)-amino-2(R)-hydroxy-4-phenylbutyl]-N-tert.butyl-2(S)-piperidinecarboxamide
Reaction equation
C(OC([NH:11][C@@H:12]([CH2:29][C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1)[C@H:13]([OH:28])[CH2:14][N:15]1[CH2:20][CH2:19][CH2:18][CH2:17][C@H:16]1[C:21]([NH:23][C:24]([CH3:27])([CH3:26])[CH3:25])=[O:22])=O)C1C=CC=CC=1>C(O)C.[Pd]>[NH2:11][C@@H:12]([CH2:29][C:30]1[CH:31]=[CH:32][CH:33]=[CH:34][CH:35]=1)[C@H:13]([OH:28])[CH2:14][N:15]1[CH2:20][CH2:19][CH2:18][CH2:17][C@H:16]1[C:21]([NH:23][C:24]([CH3:27])([CH3:25])[CH3:26])=[O:22]Participants
4
Reactant 1
Product 1
Reagents, catalysts & solvents 2
Procedure
A solution of 1.25 g of 1-[3(S)-(benzyloxyformamido)-2(R)-hydroxy-4-phenylbutyl]-N-tert.butyl-2(S)-piperidinecarboxamide in 80 ml of ethanol was hydrogenated over 10% palladium-on-carbon at 20° C. and under atmospheric pressure for 16 hours. The catalyst was removed by filtration and the filtrate was evaporated to give 0.844 g of 1-[3(S)-amino-2(R)-hydroxy-4-phenylbutyl]-N-tert.butyl-2(S)-piperidinecarboxamide as a pale yellow gum; MS: m/e 348 [M+H]+.