Water → HCID 10507094, compound

HRID 988026Notes

Reaction equation

HRID 988026 reaction equation
[NH:1]([C:32]([O:34][CH2:35][C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)=[O:33])[C@H:2]([C:6]([NH:8][C@H:9]([C:13]([N:15]([CH3:31])[C@H:16]([C:20]([N:22]1[CH2:30][CH2:29][CH2:28][C@H:23]1[C:24]([O:26]C)=[O:25])=[O:21])[CH:17]([CH3:19])[CH3:18])=[O:14])[CH:10]([CH3:12])[CH3:11])=[O:7])[CH:3]([CH3:5])[CH3:4].[Li+].[OH-].O>CO>[NH:1]([C:32]([O:34][CH2:35][C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)=[O:33])[C@H:2]([C:6]([NH:8][C@H:9]([C:13]([N:15]([CH3:31])[C@H:16]([C:20]([N:22]1[CH2:30][CH2:29][CH2:28][C@H:23]1[C:24]([OH:26])=[O:25])=[O:21])[CH:17]([CH3:19])[CH3:18])=[O:14])[CH:10]([CH3:11])[CH3:12])=[O:7])[CH:3]([CH3:4])[CH3:5]

Participants

5

Reactant 3

HCID 962WaterHCID 3939Lithium HydroxideHCID 15291044HCID 15291044, compound

Product 1

HCID 10507094HCID 10507094, compoundYield 95.8%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

31.96 g (57 mmol) Z-Val-Val-MeVal-Pro-OMe were dissolved in 250 ml methanol. 102.6 ml of a 1 N LiOH solution was added and the mixture stirred overnight at room temperature. After addition of 500 ml water, the aqueous phase was washed three times with ethyl acetate, adjusted to pH 2 at 0° C. and extracted three times with ethyl acetate. The organic phase was dried over sodium sulfate, filtered and evaporated to dryness yielding 30.62 g of the desired product as a white solid.

Workup

  1. washthe aqueous phase was washed three times with ethyl acetate
  2. customadjusted to pH 2 at 0° C.
  3. extractionextracted three times with ethyl acetate
  4. dry with materialThe organic phase was dried over sodium sulfate
  5. filtrationfiltered
  6. customevaporated to dryness

Sources & evidence

ORD record
ord-593823cf56554111ac81b1cbce395e0a
Source dataset
uspto-grants-2003_10
Patent number
US06632795B1

Reaction notes

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