(1S,2S)-2-(4-{3-fluoro-4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid benzyl ester → (1S,2S)-2-(4-{3-fluoro-4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid

HRID 557791Notes

Reaction equation

HRID 557791 reaction equation
C([O:8][C:9]([C@H:11]1[CH2:15][CH2:14][CH2:13][C@@H:12]1[C:16]([N:18]1[CH2:23][CH2:22][N:21]([C:24]2[CH:29]=[CH:28][C:27]([NH:30][C:31]([C:33]3[N:34]=[C:35]([C:42]4[CH:47]=[CH:46][CH:45]=[CH:44][CH:43]=4)[O:36][C:37]=3[C:38]([F:41])([F:40])[F:39])=[O:32])=[C:26]([F:48])[CH:25]=2)[CH2:20][CH2:19]1)=[O:17])=[O:10])C1C=CC=CC=1>CO.[OH-].[Li+].O>[F:48][C:26]1[CH:25]=[C:24]([N:21]2[CH2:22][CH2:23][N:18]([C:16]([C@H:12]3[CH2:13][CH2:14][CH2:15][C@@H:11]3[C:9]([OH:10])=[O:8])=[O:17])[CH2:19][CH2:20]2)[CH:29]=[CH:28][C:27]=1[NH:30][C:31]([C:33]1[N:34]=[C:35]([C:42]2[CH:43]=[CH:44][CH:45]=[CH:46][CH:47]=2)[O:36][C:37]=1[C:38]([F:40])([F:41])[F:39])=[O:32]

Participants

5

Reactant 1

HCID 66738142(1S,2S)-2-(4-{3-fluoro-4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid benzyl ester

Product 1

HCID 25121473(1S,2S)-2-(4-{3-fluoro-4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid

Reagents, catalysts & solvents 3

HCID 887MethanolSolventHCID 962WaterSolventHCID 3939Lithium HydroxideSolvent

Conditions

Temperature
25 °C

Procedure

To the solution of (1S,2S)-2-(4-{3-fluoro-4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid benzyl ester in methanol, lithium hydroxide and water were added. The so formed mixture was stirred at 25° C. overnight. Solvent was removed and the residue was resuspended in ethyl acetate and water. Citric acid was added to acidify the mixture. Organic layer was concentrated and the residue was purified on a reverse phase HPLC system to give (1S,2S)-2-(4-{3-fluoro-4-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-phenyl}-piperazine-1-carbonyl)-cyclopentanecarboxylic acid as a white solid. LCMS calcd for C28H26F4N4O5 (m/e) 574, obsd 575 (M+H).

Workup

  1. customThe so formed mixture
  2. customSolvent was removed
  3. additionCitric acid was added
  4. concentrationOrganic layer was concentrated
  5. customthe residue was purified on a reverse phase HPLC system

Sources & evidence

ORD record
ord-64376e4e7e1c4c808de9ae1b3d004452
Source dataset
uspto-grants-2011_11
Patent number
US08058299B2

Reaction notes

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