Hydrochloric Acid → 2-(4-fluorophenyl)-6-(N-(2-hydroxyethyl)methylsulfonamido)-5-(3-(2-phenylpropan-2-ylcarbamoyl)phenyl)pyrazolo[1,5-a]pyridine-3-carboxylic acid

HRID 219317Notes

Reaction equation

HRID 219317 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:42]([C:43]([O:45]C)=[O:44])=[C:11]3[CH:12]=[C:13]([C:24]4[CH:29]=[CH:28][CH:27]=[C:26]([C:30](=[O:41])[NH:31][C:32]([C:35]5[CH:40]=[CH:39][CH:38]=[CH:37][CH:36]=5)([CH3:34])[CH3:33])[CH:25]=4)[C:14]([N:16]([CH2:21][CH2:22][OH:23])[S:17]([CH3:20])(=[O:19])=[O:18])=[CH:15][N:10]3[N:9]=2)=[CH:4][CH:3]=1.C1COCC1.[OH-].[Li+].Cl>CO>[F:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:42]([C:43]([OH:45])=[O:44])=[C:11]3[CH:12]=[C:13]([C:24]4[CH:29]=[CH:28][CH:27]=[C:26]([C:30](=[O:41])[NH:31][C:32]([C:35]5[CH:36]=[CH:37][CH:38]=[CH:39][CH:40]=5)([CH3:34])[CH3:33])[CH:25]=4)[C:14]([N:16]([CH2:21][CH2:22][OH:23])[S:17]([CH3:20])(=[O:18])=[O:19])=[CH:15][N:10]3[N:9]=2)=[CH:4][CH:3]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 8028TetrahydrofuranHCID 59233818methyl 2-(4-fluorophenyl)-6-(N-(2-hydroxyethyl)methylsulfonamido)-5-(3-(2-phenylpropan-2-ylcarbamoyl)phenyl)pyrazolo[1,5-a]pyridine-3-carboxylate

Product 1

HCID 592336792-(4-fluorophenyl)-6-(N-(2-hydroxyethyl)methylsulfonamido)-5-(3-(2-phenylpropan-2-ylcarbamoyl)phenyl)pyrazolo[1,5-a]pyridine-3-carboxylic acid

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution containing methyl 2-(4-fluorophenyl)-6-(N-(2-hydroxyethyl)methylsulfonamido)-5-(3-(2-phenylpropan-2-ylcarbamoyl)phenyl)pyrazolo[1,5-a]pyridine-3-carboxylate (0.021 g, 0.33 mmol), THF (0.20 mL) and methanol (0.13 mL) was added aqueous lithium hydroxide (0.081 mL, 2.0 M). The solution was maintained at room temperature for 20 h, then at 45° C. for 8 h. The solution was adjusted to below pH 4 with aqueous HCl (0.21 mL, 1.0 N) and extracted with ethyl acetate (2×0.50 mL). The combined organic portions were washed with brine (0.50 mL) and concentrated to afford 2-(4-fluorophenyl)-6-(N-(2-hydroxyethyl)methylsulfonamido)-5-(3-(2-phenylpropan-2-ylcarbamoyl)phenyl)pyrazolo[1,5-a]pyridine-3-carboxylic acid as a light yellow residue which was used without further purification. LCMS: retention time: 1.778 min. LC data was recorded on a Shimadzu LC-10AS liquid chromatograph equipped with a Phenomenex-Luna, 10u, C18, 3.0×50 mm column using a SPD-10AV UV-Vis detector at a detector wave length of 220 nM. The elution conditions employed a flow rate of 4 mL/min, a gradient of 100% solvent A/0% solvent B to 0% solvent A/100% solvent B, a gradient time of 2 min, a hold time of 1 min, and an analysis time of 3 min where solvent A was 10% methanol/90% H2O/10 mM TFA and solvent B was 10% H2O/90% methanol/10 mM TFA. MS data was determined using a Micromass Platform for LC in electrospray mode. m/z 631 (MH+).

Workup

  1. extractionextracted with ethyl acetate (2×0.50 mL)
  2. washThe combined organic portions were washed with brine (0.50 mL)
  3. concentrationconcentrated

Sources & evidence

ORD record
ord-e53a566b8db04916b68e59b01e1b2a55
Source dataset
uspto-grants-2012_06
Patent number
US08198449B2

Reaction notes

Loading…