Lithium Hydroxide → (S)-2-((S)-3-acetamido-3-((R)-sec-butyl)-2-oxopyrrolidin-1-yl)-N-((1R,2S)-3-(3,5-difluorophenyl)-1-hydroxy-1-((2R,4S)-4-phenoxypyrrolidin-2-yl)propan-2-yl)-4-phenylbutanamide

HRID 132951Notes

Reaction equation

HRID 132951 reaction equation
[NH2:1][C@@H:2]([CH2:30][C:31]1[CH:36]=[C:35]([F:37])[CH:34]=[C:33]([F:38])[CH:32]=1)[C@@H:3]([C@H:5]1[CH2:9][C@H:8]([O:10][C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH2:7][N:6]1C(C1C=CC=CC=1)C1C=CC=CC=1)[OH:4].[C:39]([NH:42][C@:43]1([C@@H:92]([CH2:94][CH3:95])[CH3:93])[CH2:47][CH2:46][N:45]([C@@H:48]([CH2:83][CH2:84][C:85]2[CH:90]=[CH:89][CH:88]=[CH:87][CH:86]=2)[C:49](N[C@@H](CC2C=C(F)C=C(F)C=2)[C@@H]([C@H]2CCCCN2C(C2C=CC=CC=2)C2C=CC=CC=2)O)=[O:50])[C:44]1=[O:91])(=[O:41])[CH3:40].[Li+].[OH-].CO.C(Cl)(Cl)Cl>CCO.O>[C:39]([NH:42][C@:43]1([C@@H:92]([CH2:94][CH3:95])[CH3:93])[CH2:47][CH2:46][N:45]([C@@H:48]([CH2:83][CH2:84][C:85]2[CH:86]=[CH:87][CH:88]=[CH:89][CH:90]=2)[C:49]([NH:1][C@@H:2]([CH2:30][C:31]2[CH:36]=[C:35]([F:37])[CH:34]=[C:33]([F:38])[CH:32]=2)[C@H:3]([OH:4])[C@H:5]2[CH2:9][C@H:8]([O:10][C:11]3[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=3)[CH2:7][NH:6]2)=[O:50])[C:44]1=[O:91])(=[O:41])[CH3:40]

Participants

7

Reactant 4

HCID 3939Lithium HydroxideHCID 21584188Chloroform methanolHCID 69194179(S)-2-((S)-3-acetamido-3-((R)-sec-butyl)-2-oxopyrrolidin-1-yl)-N-((1S,2S)-1-((R)-1-benzhydrylpiperidin-2-yl)-3-(3,5-difluorophenyl)-1-hydroxypropan-2-yl)-4-phenylbutanamideHCID 69195486(1S,2S)-2-amino-1-((2R,4S)-1-benzhydryl-4-phenoxypyrrolidin-2-yl)-3-(3,5-difluorophenyl)propan-1-ol

Product 1

HCID 69196467(S)-2-((S)-3-acetamido-3-((R)-sec-butyl)-2-oxopyrrolidin-1-yl)-N-((1R,2S)-3-(3,5-difluorophenyl)-1-hydroxy-1-((2R,4S)-4-phenoxypyrrolidin-2-yl)propan-2-yl)-4-phenylbutanamideYield 73%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 962WaterSolvent

Procedure

Step 9 (B): (1S,2S)-2-amino-1-((2R,4S)-1-benzhydryl-4-phenoxypyrrolidin-2-yl)-3-(3,5-difluorophenyl)propan-1-ol. To a solution of (4S,5S)-4-(3,5-difluorobenzyl)-5-((2R,4S)-1-benzhydryl-4-phenoxypyrrolidin-2-yl)oxazolidin-2-one (Step 9 (A), 57 mg, 0.11 mmol) in EtOH (5 mL) was added a solution of LiOH (53 mg, 2.2 mmol) in H2O (1.5 mL). This reaction mixture was stirred at reflux for 4 h. After cooling down to rt, the mixture was concentrated to remove EtOH and H2O was added followed by 1N HCl solution and pH 7 buffer. The mixture was extracted with ethyl acetate and the organic phase was washed with sat. aqueous NaCl, dried (MgSO4), and concentrated in vacuo. Flash chromatography (silica gel, 0-10% MeOH/chloroform) gave 41.1 mg (73% yield) of the title compound: 1H NMR (CDCl3, 300 MHz) δ 2.05-2.12 (1H, m), 2.21-2.30 (1H, m), 2.39 (1H, m), 2.62-2.72 (2H, m), 2.90-2.99 (2H, m), 3.39 (1H, dd, J=3, 12 Hz), 3.69 (1H, m), 4.80 (1H, m), 5.07 (1H, s), 6.65-6.68 (3H, m), 6.82 (2H, m), 6.93 (1H, m), 7.14 (1H, m), 7.20-7.31 (7H, m), 7.35-7.38 (4H, m). HPLC retention time: 1.65 min (method C). MS (ESI) (M+H)+ 515.35.

Workup

  1. temperatureat reflux for 4 h
  2. concentrationthe mixture was concentrated
  3. customto remove EtOH and H2O
  4. additionwas added
  5. extractionThe mixture was extracted with ethyl acetate
  6. washthe organic phase was washed with sat. aqueous NaCl
  7. dry with materialdried (MgSO4)
  8. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-d77bfa96eb004beaac54efffcf592249
Source dataset
uspto-grants-2008_06
Patent number
US07388007B2

Reaction notes

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