Triacetoxyperiodinane → N-[(1-methylindole-2-carbonyl)valinyl]-3-amino-4-oxo-5-fluoropentanoic acid, t-butyl ester

HRID 1531726Notes

Reaction equation

HRID 1531726 reaction equation
[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[C:3]1[C:11]([NH:13][C@H:14]([C:18]([NH:20][CH:21]([CH:30]([OH:33])[CH2:31][F:32])[CH2:22][C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])=[O:19])[CH:15]([CH3:17])[CH3:16])=[O:12].CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O>CS(C)=O>[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[C:3]1[C:11]([NH:13][C@H:14]([C:18]([NH:20][CH:21]([C:30](=[O:33])[CH2:31][F:32])[CH2:22][C:23]([O:25][C:26]([CH3:27])([CH3:29])[CH3:28])=[O:24])=[O:19])[CH:15]([CH3:16])[CH3:17])=[O:12]

Participants

4

Reactant 2

HCID 159087TriacetoxyperiodinaneHCID 69986607N-[(1-methylindole-2-carbonyl)valinyl]-3-amino-4-hydroxy-5-fluoropentanoic Acid T-Butyl Ester

Product 1

HCID 86584009N-[(1-methylindole-2-carbonyl)valinyl]-3-amino-4-oxo-5-fluoropentanoic acid, t-butyl esterYield 49.2%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Procedure

To a solution of N-[(1-methylindole-2-carbonyl)valinyl]-3-amino-4-hydroxy-5-fluoropentanoic acid, t-butyl ester (51 mg, 0.11 mmol) in DMSO(1 mL) was added Dess-Martin periodinane (110 mg). After 30 min at room temperature the reaction mixture was partitioned between ethyl acetate and water. The organic layer was washed with water and brine, dried and concentrated to a white solid. Trituration with diethyl ether and collection of the solid afforded the title compound as a white powder (25 mg, 49% yield). TLC(MeOH:CH2Cl2, 5:95): Rf=0.48.

Workup

  1. customAfter 30 min at room temperature the reaction mixture was partitioned between ethyl acetate and water
  2. washThe organic layer was washed with water and brine
  3. customdried
  4. concentrationconcentrated to a white solid
  5. customTrituration with diethyl ether and collection of the solid

Sources & evidence

ORD record
ord-18403060f90549d2bb9a02796023f6d7
Source dataset
uspto-grants-2001_03
Patent number
US06200969B1

Reaction notes

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