L-Prolinamide → (2S,4S)-2-[(2S)-2-carbamoylpyrrolidin-1-yl]methyl-1-(4-nitrobenzyloxycarbonyl)-4-(triphenylmethylthio)pyrrolidine

HRID 1590472Notes

Reaction equation

HRID 1590472 reaction equation
CS(O[C@@:6]1([CH3:44])[CH2:10][C@H:9]([S:11][C:12]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH2:8][N:7]1[C:31]([O:33][CH2:34][C:35]1[CH:40]=[CH:39][C:38]([N+:41]([O-:43])=[O:42])=[CH:37][CH:36]=1)=[O:32])(=O)=O.[C:45]([C@@H:48]1[CH2:52][CH2:51][CH2:50][NH:49]1)(=[O:47])[NH2:46]>CN(C)C=O>[C:45]([C@@H:48]1[CH2:52][CH2:51][CH2:50][N:49]1[CH2:44][C@@H:6]1[CH2:10][C@H:9]([S:11][C:12]([C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[C:13]2[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=2)[CH2:8][N:7]1[C:31]([O:33][CH2:34][C:35]1[CH:40]=[CH:39][C:38]([N+:41]([O-:43])=[O:42])=[CH:37][CH:36]=1)=[O:32])(=[O:47])[NH2:46]

Participants

4

Reactant 2

HCID 111306L-ProlinamideHCID 86746727(2S,4S)-2-(methanesulfonyloxy)-methyl-1-(4-nitrobenzyloxycarbonyl)-4-(triphenylmethylthio)pyrrolidine

Product 1

HCID 15056121(2S,4S)-2-[(2S)-2-carbamoylpyrrolidin-1-yl]methyl-1-(4-nitrobenzyloxycarbonyl)-4-(triphenylmethylthio)pyrrolidineYield 25.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of (2S,4S)-2-(methanesulfonyloxy)-methyl-1-(4-nitrobenzyloxycarbonyl)-4-(triphenylmethylthio)pyrrolidine (3.0 g) in dimethylformamide (30 ml) was added (2S)-2-carbamoylpyrrolidine (10.76 g) and the mixture was stirred at 100°-110° C. for 5 hours. The reaction mixture was poured into ice-water (100 ml). The resulting precipitates were collected by filtration and washed with water (100 ml). The precipitates were dissolved in ethyl acetate (80 ml) and the solution was washed with aqueous sodium chloride, dried over anhydrous magnesium sulfate and evaporated in vacuo to give a residue. The residue was chromatographed on silica gel (100 g) eluting with a mixture of dichloro-methane and acetone (9:1 V/V). The fractions containing the desired compound were collected and evaporated in vacuo to give (2S ,4S )-2-[(2S)-2-carbamoylpyrrolidin-1-yl]methyl-1-(4-nitrobenzyloxycarbonyl)-4-(triphenylmethylthio)pyrrolidine (0.78 g).

Workup

  1. customThe resulting precipitates
  2. filtrationwere collected by filtration
  3. washwashed with water (100 ml)
  4. dissolutionThe precipitates were dissolved in ethyl acetate (80 ml)
  5. washthe solution was washed with aqueous sodium chloride
  6. dry with materialdried over anhydrous magnesium sulfate
  7. customevaporated in vacuo
  8. customto give a residue
  9. customThe residue was chromatographed on silica gel (100 g)
  10. washeluting with a mixture of dichloro-methane and acetone (9:1 V/V)
  11. additionThe fractions containing the desired compound
  12. customwere collected
  13. customevaporated in vacuo

Sources & evidence

ORD record
ord-eabf56b10d034cc385a0dca837d7dd67
Source dataset
uspto-grants-1993_04
Patent number
US05202437

Reaction notes

Loading…