4-[(S)-2-({5-[(1-Benzyloxycarbonyl-cyclobutylcarbamoyl)-methoxy]-1-phenyl-1H-pyrazole-3-carbonyl}-amino)-4-tert-butoxycarbonyl-butyryl]-piperazine-1-carboxylic acid ethyl ester → 4-[(S)-4-tert-Butoxycarbonyl-2-({5-[(1-carboxy-cyclobutylcarbamoyl)-methoxy]-1-phenyl-1H-pyrazole-3-carbonyl}-amino)-butyryl]-piperazine-1-carboxylic acid ethyl ester

HRID 1908654Notes

Reaction equation

HRID 1908654 reaction equation
[CH2:1]([O:3][C:4]([N:6]1[CH2:11][CH2:10][N:9]([C:12](=[O:56])[C@@H:13]([NH:23][C:24]([C:26]2[CH:30]=[C:29]([O:31][CH2:32][C:33](=[O:49])[NH:34][C:35]3([C:39]([O:41]CC4C=CC=CC=4)=[O:40])[CH2:38][CH2:37][CH2:36]3)[N:28]([C:50]3[CH:55]=[CH:54][CH:53]=[CH:52][CH:51]=3)[N:27]=2)=[O:25])[CH2:14][CH2:15][C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:8][CH2:7]1)=[O:5])[CH3:2]>C(OCC)(=O)C>[CH2:1]([O:3][C:4]([N:6]1[CH2:7][CH2:8][N:9]([C:12](=[O:56])[C@@H:13]([NH:23][C:24]([C:26]2[CH:30]=[C:29]([O:31][CH2:32][C:33](=[O:49])[NH:34][C:35]3([C:39]([OH:41])=[O:40])[CH2:38][CH2:37][CH2:36]3)[N:28]([C:50]3[CH:55]=[CH:54][CH:53]=[CH:52][CH:51]=3)[N:27]=2)=[O:25])[CH2:14][CH2:15][C:16]([O:18][C:19]([CH3:22])([CH3:21])[CH3:20])=[O:17])[CH2:10][CH2:11]1)=[O:5])[CH3:2]

Participants

3

Reactant 1

HCID 669201834-[(S)-2-({5-[(1-Benzyloxycarbonyl-cyclobutylcarbamoyl)-methoxy]-1-phenyl-1H-pyrazole-3-carbonyl}-amino)-4-tert-butoxycarbonyl-butyryl]-piperazine-1-carboxylic acid ethyl ester

Product 1

HCID 669203494-[(S)-4-tert-Butoxycarbonyl-2-({5-[(1-carboxy-cyclobutylcarbamoyl)-methoxy]-1-phenyl-1H-pyrazole-3-carbonyl}-amino)-butyryl]-piperazine-1-carboxylic acid ethyl ester

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 4.7 g 4-[(S)-2-({5-[(1-Benzyloxycarbonyl-cyclobutylcarbamoyl)-methoxy]-1-phenyl-1H-pyrazole-3-carbonyl}-amino)-4-tert-butoxycarbonyl-butyryl]-piperazine-1-carboxylic acid ethyl ester in 100 ml ethyl acetate were added under argon 0.5 g Pd/C (10%) and the suspension was stirred under an atmosphere of hydrogen (3 bar) for 24 h. The suspension was filtered over a plug of Celite® and washed with ethyl acetate. The crude product obtained after evaporation of the solvent was used in the subsequent reaction. Yield: 3.7 g

Workup

  1. filtrationThe suspension was filtered over a plug of Celite®
  2. washwashed with ethyl acetate

Sources & evidence

ORD record
ord-cba805fcf3fb49978245681d3165ab0e
Source dataset
uspto-grants-2013_12
Patent number
US08598179B2

Reaction notes

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