benzyl (S)-1-((1S,2R,4R)-2-acetamido-4-(isopropyl(methyl)amino)cyclohexyl)-2-oxopyrrolidin-3-ylcarbamate → N-((1R,2S,5R)-2-((S)-3-amino-2-oxopyrrolidin-1-yl)-5-(isopropyl(methyl)amino)cyclohexyl)acetamide
Reaction equation
[C:1]([NH:4][C@@H:5]1[CH2:10][C@H:9]([N:11]([CH:13]([CH3:15])[CH3:14])[CH3:12])[CH2:8][CH2:7][C@@H:6]1[N:16]1[CH2:20][CH2:19][C@H:18]([NH:21]C(=O)OCC2C=CC=CC=2)[C:17]1=[O:32])(=[O:3])[CH3:2]>CO.[Pd]>[NH2:21][C@H:18]1[CH2:19][CH2:20][N:16]([C@H:6]2[CH2:7][CH2:8][C@@H:9]([N:11]([CH:13]([CH3:15])[CH3:14])[CH3:12])[CH2:10][C@H:5]2[NH:4][C:1](=[O:3])[CH3:2])[C:17]1=[O:32]Participants
Reactant 1
Product 1
Reagents, catalysts & solvents 2
Procedure
To a solution of benzyl (S)-1-((1S,2R,4R)-2-acetamido-4-(isopropyl(methyl)amino)-cyclohexyl)-2-oxopyrrolidin-3-ylcarbamate (˜0.115 mol) in methanol (600 mL) was added 10% Pd/C (6 g of 50% wet catalyst). The flask was evacuated and back-filled with hydrogen. The mixture was stirred under 1 atm H2 for 2 h and the catalyst was removed by filtration through Celite. The filtrate was concentrated in vacuo to provide N-((1R,2S,5R)-2-((S)-3-amino-2-oxopyrrolidin-1-yl)-5-(isopropyl(methyl)amino)cyclohexyl)acetamide as an oil, which was taken on to the next step without further purification. LC/MS found [M+H]+=311.47. 1H-NMR (400 MHz, d4-MeOH): δ 4.39 (br s, 1H), 4.00 (m, 1H), 3.3-3.5 (m, 4H), 2.73 (m, 1H), 2.38 (m, 1H), 2.25 (s, 3H), 2.0-2.2 (m, 3H), 1.94 (s, 3H), 1.6-1.75 (m, 4H), 1.07 (app. dd, J=21, 6.4 Hz, 6H).
Workup
- customThe flask was evacuated
- additionback-filled with hydrogen
- customthe catalyst was removed by filtration through Celite
- concentrationThe filtrate was concentrated in vacuo
Sources & evidence
- ORD record
- ord-bcdc1d2080c54a1986ce6f237a2d1d1e
- Source dataset
- uspto-grants-2010_03
- Patent number
- US07687508B2
Reaction notes
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