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

HRID 1602000Notes

Reaction equation

HRID 1602000 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 dichloromethane/methanol/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-23e9732b762b4d0d80e8ab9a02ba837c
Source dataset
uspto-grants-1999_11
Patent number
US05977178

Reaction notes

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