HCID 18337567, compound → N-hydroxy-2(R)-[(3,4-methylenedioxybenzyl)-(4-methoxy-2,3,6-trimethylbenzenesulfonyl)amino]-3(S)-hydroxybutyramide

HRID 1760823Notes

Reaction equation

HRID 1760823 reaction equation
C([O:8][NH:9][C:10](=[O:40])[C@H:11]([N:15]([CH2:30][C:31]1[CH:36]=[CH:35][C:34]2[O:37][CH2:38][O:39][C:33]=2[CH:32]=1)[S:16]([C:19]1[C:24]([CH3:25])=[CH:23][C:22]([O:26][CH3:27])=[C:21]([CH3:28])[C:20]=1[CH3:29])(=[O:18])=[O:17])[C@@H:12]([OH:14])[CH3:13])C1C=CC=CC=1>[Pd].C(O)C.O1CCCC1>[OH:8][NH:9][C:10](=[O:40])[C@H:11]([N:15]([CH2:30][C:31]1[CH:36]=[CH:35][C:34]2[O:37][CH2:38][O:39][C:33]=2[CH:32]=1)[S:16]([C:19]1[C:24]([CH3:25])=[CH:23][C:22]([O:26][CH3:27])=[C:21]([CH3:28])[C:20]=1[CH3:29])(=[O:18])=[O:17])[C@@H:12]([OH:14])[CH3:13]

Participants

4

Reactant 1

HCID 18337567HCID 18337567, compound

Product 1

HCID 18337574N-hydroxy-2(R)-[(3,4-methylenedioxybenzyl)-(4-methoxy-2,3,6-trimethylbenzenesulfonyl)amino]-3(S)-hydroxybutyramideYield 63.7%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 21873804Tetrahydrofuran ethanolSolvent

Procedure

To a solution of N-benzyloxy-2(R)-[(3,4-methylenedioxybenzyl)-(4-methoxy-2,3,6-trimethylbenzenesulfonyl)amino]-3(S)-hydroxybutyramide (1.25 g, 2.19 mmol) in argon deoxygenated 80% ethanol-tetrahydrofuran (100 mL) was added 10% Pd—C (0.7 g), and the resulting mixture was hydrogenated at atmospheric pressure for 60 min. The reaction mixture was degassed under argon and the slurry was filtered over Celite. The Celite cake was washed with ample 80% ethanol-methylene chloride and the filtrate was concentrated to almost dryness. The mixture was dissolved in 4 mL of ethyl acetate which was added slowly dropwise to 100 mL of vigorously stirring hexanes. The slurry was filtered to afford N-hydroxy-2(R)-[(3,4-methylenedioxybenzyl)-(4-methoxy-2,3,6-trimethylbenzenesulfonyl)amino]-3(S)-hydroxybutyramide (0.67 g) as a white solid.

Workup

  1. customThe reaction mixture was degassed under argon
  2. filtrationthe slurry was filtered over Celite
  3. washThe Celite cake was washed with ample 80% ethanol-methylene chloride
  4. concentrationthe filtrate was concentrated to almost dryness
  5. dissolutionThe mixture was dissolved in 4 mL of ethyl acetate which
  6. additionwas added slowly dropwise to 100 mL of vigorously stirring hexanes
  7. filtrationThe slurry was filtered

Sources & evidence

ORD record
ord-90625ec3aca44abdb8dff5b0ee2c346e
Source dataset
uspto-grants-2005_01
Patent number
US06844366B2

Reaction notes

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