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

HRID 1859614Notes

Reaction equation

HRID 1859614 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-0f865c19e92246a78758c920384facde
Source dataset
uspto-grants-2003_03
Patent number
US06528506B2

Reaction notes

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