Lithium hydroxide, monohydrate → 7-[(3R)-3-[(tert-Butoxycarbonyl)amino]-4-(2,5-difluorophenyl)butanoyl]-2-(trifluoromethyl)-5,6,7,8-tetrahydro-1,7-naphthyridine-3-carboxylic acid

HRID 132881Notes

Reaction equation

HRID 132881 reaction equation
[C:1]([O:5][C:6]([NH:8][C@H:9]([CH2:32][C:33]1[CH:38]=[C:37]([F:39])[CH:36]=[CH:35][C:34]=1[F:40])[CH2:10][C:11]([N:13]1[CH2:22][C:21]2[N:20]=[C:19]([C:23]([F:26])([F:25])[F:24])[C:18]([C:27]([O:29]CC)=[O:28])=[CH:17][C:16]=2[CH2:15][CH2:14]1)=[O:12])=[O:7])([CH3:4])([CH3:3])[CH3:2].O.[OH-].[Li+]>O1CCCC1.CO.O>[C:1]([O:5][C:6]([NH:8][C@H:9]([CH2:32][C:33]1[CH:38]=[C:37]([F:39])[CH:36]=[CH:35][C:34]=1[F:40])[CH2:10][C:11]([N:13]1[CH2:22][C:21]2[N:20]=[C:19]([C:23]([F:26])([F:25])[F:24])[C:18]([C:27]([OH:29])=[O:28])=[CH:17][C:16]=2[CH2:15][CH2:14]1)=[O:12])=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

4

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 69222346Ethyl 7-[(3R)-3-[(tert-butoxycarbonyl)amino]-4-(2,5-difluorophenyl)butanoyl]-2-(trifluoromethyl)-5,6,7,8-tetrahydro-1,7-naphthyridine-3-carboxylate

Product 1

HCID 692244927-[(3R)-3-[(tert-Butoxycarbonyl)amino]-4-(2,5-difluorophenyl)butanoyl]-2-(trifluoromethyl)-5,6,7,8-tetrahydro-1,7-naphthyridine-3-carboxylic acid

Reagents, catalysts & solvents 1

HCID 21892291Methanol tetrahydrofuran waterSolvent

Procedure

A solution of the product from Step A above (92 mg, 0.161 mmol) in 1.2 mL of 3:2:1 tetrahydrofuran/methanol/water was treated with lithium hydroxide monohydrate (10 mg) and the solution was stirred at room temperature for 18 h. The volatiles were removed under a stream of nitrogen, and the residue was dissolved in 4 mL of water. The solution was acidified by portionwise addition of citric acid monohydrate, and the product was extracted into ethyl acetate. The combined organic extracts were dried over magnesium sulfate and concentrated to afford the title compound as a white foam.

Workup

  1. customThe volatiles were removed under a stream of nitrogen
  2. dissolutionthe residue was dissolved in 4 mL of water
  3. additionThe solution was acidified by portionwise addition of citric acid monohydrate
  4. extractionthe product was extracted into ethyl acetate
  5. dry with materialThe combined organic extracts were dried over magnesium sulfate
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-3b98789a5fe54851a756c4cb22efb505
Source dataset
uspto-grants-2008_06
Patent number
US07388019B2

Reaction notes

Loading…