P,P-Diphenylphosphinic azide → (4S,5S)-4-(3,5-difluorobenzyl)-5-((2R,4S)-1-benzhydryl-4-hydroxypyrrolidin-2-yl)oxazolidin-2-one

HRID 132943Notes

Reaction equation

HRID 132943 reaction equation
F[C:2]1[CH:3]=[C:4]([CH:40]=[C:41](F)[CH:42]=1)[CH2:5][C@H:6]([C:25](N1[C@@H](CC2C=CC=CC=2)COC1=O)=O)[C@@H:7]([C@H:9]1[CH2:13][C@@H:12](OCC=C)CN1C(OC(C)(C)C)=O)O.[F:44][C:45]1[CH:46]=[C:47]([CH:68]=[C:69]([F:71])[CH:70]=1)[CH2:48][C@H:49]1[C@@H:53]([CH:54]2[CH2:59][O:58][CH2:57][CH2:56][N:55]2C(OC(C)(C)C)=O)[O:52][C:51](=[O:67])[NH:50]1.FC1C=C(C=C(F)C=1)C[C@@H]([C@@H]([C@H]1C[C@@H](OCC=C)CN1C(OC(C)(C)C)=O)O)C(O)=O.C1(P(N=[N+]=[N-])(C2C=CC=CC=2)=O)C=CC=CC=1>C1(C)C=CC=CC=1.C(OCC)(=O)C.C(N(CC)CC)C>[F:71][C:69]1[CH:68]=[C:47]([CH:46]=[C:45]([F:44])[CH:70]=1)[CH2:48][C@H:49]1[C@@H:53]([C@H:54]2[CH2:59][C@H:57]([OH:58])[CH2:56][N:55]2[CH:5]([C:4]2[CH:3]=[CH:2][CH:42]=[CH:41][CH:40]=2)[C:6]2[CH:7]=[CH:9][CH:13]=[CH:12][CH:25]=2)[O:52][C:51](=[O:67])[NH:50]1

Participants

8

Reactant 4

HCID 199401P,P-Diphenylphosphinic azideHCID 67315602tert-Butyl 3-((4S,5S)-4-(3,5-difluorobenzyl)-2-oxooxazolidin-5-yl)morpholine-4-carboxylateHCID 67316359(2R,4R)-tert-butyl 2-((1S,2S)-2-(3,5-difluorobenzyl)-3-((S)-4-benzyl-2-oxooxazolidin-3-yl)-1-hydroxy-3-oxopropyl)-4-(allyloxy)pyrrolidine-1-carboxylateHCID 67316915(2S,3S)-2-(3,5-difluorobenzyl)-3-((2R,4R)-4-(allyloxy)-1-(tert-butoxycarbonyl)pyrrolidin-2-yl)-3-hydroxypropanoic acid

Product 1

HCID 58608198(4S,5S)-4-(3,5-difluorobenzyl)-5-((2R,4S)-1-benzhydryl-4-hydroxypyrrolidin-2-yl)oxazolidin-2-one

Reagents, catalysts & solvents 3

HCID 1140TolueneSolventHCID 8471TriethylamineSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
80 °C

Procedure

Step L (5): tert-Butyl 3-((4S,5S)-4-(3,5-difluorobenzyl)-2-oxooxazolidin-5-yl)morpholine-4-carboxylate. To a solution of (2S,3S)-2-(3,5-difluorobenzyl)-3-(4-(tert-butoxycarbonyl)morpholin-3-yl)-3-hydroxypropanoic acid (step L (6), 1.6 g, 4 mmol) in toluene (100 mL) was added diphenylphosphoryl azide (1.65 g, 6 mmol) and triethyl amine (1.01 g, 10 mmoL). This reaction mixture was stirred at 80° C. for 4 h. Ethyl acetate (500 mL) was added. The mixture was washed with sodium carbonate solution, H2O, dried over Na2SO4 and concentrated. The crude mixture was purified by silica gel Flash Chromatography (0% to 20% to 30% to 50% to 70% EtOAc/Hexane step gradient) to give 800 mg of the title compound: MS (ESI) (M−H)− 397.12.

Workup

  1. washThe mixture was washed with sodium carbonate solution, H2O
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated
  4. customThe crude mixture was purified by silica gel Flash Chromatography (0% to 20% to 30% to 50% to 70% EtOAc/Hexane step gradient)

Sources & evidence

ORD record
ord-acb09f24b3e3472b9184ed889e1d556b
Source dataset
uspto-grants-2008_06
Patent number
US07388007B2

Reaction notes

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