Triacetoxyperiodinane → N-[(1,3-dimethyl-indole-2-cabonyl)valinyl]-3-amino-4-oxo-5-(2,3,5,6-tetrafluorophenyloxy)-pentanoic Acid, tert-butyl Ester

HRID 634948Notes

Reaction equation

HRID 634948 reaction equation
[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[C:4]([CH3:11])=[C:3]1[C:12]([NH:14][C@H:15]([C:19]([NH:21][CH:22]([CH:31]([OH:44])[CH2:32][O:33][C:34]1[C:39]([F:40])=[C:38]([F:41])[CH:37]=[C:36]([F:42])[C:35]=1[F:43])[CH2:23][C:24]([O:26][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:25])=[O:20])[CH:16]([CH3:18])[CH3:17])=[O:13].CC(OI1(OC(C)=O)(OC(C)=O)OC(=O)C2C=CC=CC1=2)=O>C(Cl)Cl>[CH3:1][N:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[C:4]([CH3:11])=[C:3]1[C:12]([NH:14][C@H:15]([C:19]([NH:21][CH:22]([C:31](=[O:44])[CH2:32][O:33][C:34]1[C:39]([F:40])=[C:38]([F:41])[CH:37]=[C:36]([F:42])[C:35]=1[F:43])[CH2:23][C:24]([O:26][C:27]([CH3:28])([CH3:29])[CH3:30])=[O:25])=[O:20])[CH:16]([CH3:18])[CH3:17])=[O:13]

Participants

4

Reactant 2

HCID 159087TriacetoxyperiodinaneHCID 86756369N-[(1,3-dimethyl-indole-2-cabonyl)valinyl]-3-amino-4-hydroxy-5-(2,3,5,6-tetrafluorophenyloxy)-pentanoic Acid, tert-butyl Ester

Product 1

HCID 86756370N-[(1,3-dimethyl-indole-2-cabonyl)valinyl]-3-amino-4-oxo-5-(2,3,5,6-tetrafluorophenyloxy)-pentanoic Acid, tert-butyl EsterYield 65.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of N-[(1,3-dimethyl-indole-2-carbonyl)valinyl]-3-amino-4-hydroxy-5-(2,3,5,6-tetrafluorophenyloxy)-pentanoic acid, tert-butyl ester (209 mg, 0.33 mmol) in CH2Cl2 (5.0 ml) was added Dess-Martin periodinane (181 mg, 0.43 mmol) and the solution stirred for 10 min. at room temperature. The reaction was quenched with Na2S2O4, diluted with EtOAc, washed with NaHCO3, and brine, dried over Na2SO4, filtered and concentrated in vacuo. The crude product was purified by chromatography (1:1 EtOAc/hexane) to give the titled product as a white solid (135 mg, 64%).

Workup

  1. customThe reaction was quenched with Na2S2O4
  2. additiondiluted with EtOAc
  3. washwashed with NaHCO3, and brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe crude product was purified by chromatography (1:1 EtOAc/hexane)

Sources & evidence

ORD record
ord-687658cc66f54866b73f7b7d851a61e1
Source dataset
uspto-grants-2001_02
Patent number
US06184244B2

Reaction notes

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