Trifluoroacetic acid → N-((2R)-2-(N-methyl-N-((2R)-2-methylamino-3-(2-naphthyl)propionyl)amino)-3-phenylpropyl)methanesulfonamide

HRID 495836Notes

Reaction equation

HRID 495836 reaction equation
FC(F)(F)C(O)=O.C(O[C:13](=O)[N:14]([C@@H:16]([C:28](=[O:45])[N:29]([C@H:31]([CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1)[CH2:32][NH:33][S:34]([CH3:37])(=[O:36])=[O:35])[CH3:30])[CH2:17][C:18]1[CH:27]=[CH:26][C:25]2[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=2)[CH:19]=1)C)(C)(C)C>ClCCl>[CH3:30][N:29]([C@H:31]([CH2:38][C:39]1[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=1)[CH2:32][NH:33][S:34]([CH3:37])(=[O:35])=[O:36])[C:28](=[O:45])[C@H:16]([NH:14][CH3:13])[CH2:17][C:18]1[CH:27]=[CH:26][C:25]2[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=2)[CH:19]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 53875779N-((1R)-1-(N-((1R)-1-Benzyl-2-((methylsulfonyl)amino)ethyl)-N-methylcarbamoyl)-2-(2-naphthyl)ethyl)-N-methylcarbamic acid tert-butylester

Product 1

HCID 54203801N-((2R)-2-(N-methyl-N-((2R)-2-methylamino-3-(2-naphthyl)propionyl)amino)-3-phenylpropyl)methanesulfonamideYield 79.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

At 0° C., trifluoroacetic acid (4 ml) was added to a solution of N-((1R)-1-(N-((1R)-1-benzyl-2-((methylsulfonyl)amino)ethyl)-N-methylcarbamoyl)-2-(2-naphthyl)ethyl)-N-methylcarbamic acid tert-butylester (997 mg, 1.8 mmol) in dichloromethane (4 ml). The solution was stirred for 15 min at 0° C. The solvent was removed in vacuo at 20 ° C. The residue was dissolved in dichloromethane and the solvent was removed in vacuo. The latter procedure was repeated two times. The crude product was purified by flash chromatography on silica (45 g), using dichloromethanelmethanol/25% aqueous ammonia as eluent, to give 646 mg of N-((2R)-2-(N-methyl-N-((2R)-2-methylamino-3-(2-naphthyl)propionyl)amino)-3-phenylpropyl)methanesulfonamide.

Workup

  1. customThe solvent was removed in vacuo at 20 ° C
  2. dissolutionThe residue was dissolved in dichloromethane
  3. customthe solvent was removed in vacuo
  4. customThe crude product was purified by flash chromatography on silica (45 g)

Sources & evidence

ORD record
ord-fea053228aee4b60871a5592a2143760
Source dataset
uspto-grants-2005_09
Patent number
US06939880B2

Reaction notes

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