(3S,4R)-3-[(R)-1-hydroxyethyl]-4-[(R)-1-methyl-3-diazo-3-allyloxycarbonyl-2-oxopropyl]-2-azetidinone → allyl (4R,5R,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylate

HRID 1088998

반응식

HRID 1088998 반응식
[N+](=[C:3]([C:10](=[O:21])[C@@H:11]([C@@H:13]1[C@@H:16]([C@H:17]([OH:19])[CH3:18])[C:15](=[O:20])[NH:14]1)[CH3:12])[C:4]([O:6][CH2:7][CH:8]=[CH2:9])=[O:5])=[N-]>ClCCl.C(#N)C.C([O-])(=O)CCCCCCC.[Rh+2].C([O-])(=O)CCCCCCC>[OH:19][C@@H:17]([C@H:16]1[C:15](=[O:20])[N:14]2[C@@H:13]1[C@@H:11]([CH3:12])[C:10](=[O:21])[CH:3]2[C:4]([O:6][CH2:7][CH:8]=[CH2:9])=[O:5])[CH3:18]

참가 물질

5

반응물 1

HCID 54331596(3S,4R)-3-[(R)-1-hydroxyethyl]-4-[(R)-1-methyl-3-diazo-3-allyloxycarbonyl-2-oxopropyl]-2-azetidinone

생성물 1

HCID 14329061allyl (4R,5R,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylate

시약·촉매·용매 3

HCID 10178397Rhodium(II) octanoate촉매2회HCID 6342Acetonitrile용매HCID 6344Dichloromethane용매

실험 절차

To a solution of allyl (4R)-2-diazo-4-[(2R,3S)-3-{(1R)-1-hydroxyethyl}-4-oxoazetidin-2-yl]-3-oxopentanoate (0.36 g) in dichloromethane (2.25 ml) was added rhodium (II) octanoate (6 mg) under reflux. After refluxing for 20 minutes, to the solution was added rhodium (II) octanoate (6 mg). The mixture was refluxed for 40 minutes. The reaction mixture was cooled and evaporated in vacuo to give a residue. The residue was dissolved in anhydrous acetonitrile (4.5 ml) and then evaporated. This operation was repeated once again and the resulting residue was dried in vacuo to give allyl (4R,5R,6S)-6-[(1R)-1-hydroxyethyl]-4-methyl-3,7-dioxo-1-azabicyclo[3.2.0]heptane-2-carboxylate. The residue containing the compound obtained above was dissolved in anhydrous acetonitrile (4.5 ml) and cooled to 0°-5° C. under an atmosphere of nitrogen. To this solution were added diphenyl phosphorochloridate (0.35 ml) and N,N-diisopropyl-N-ethylamine (0.32 ml) successively and the solution was stirred at 0°-5° C. for 1 hour. To the resulting solution were added dropwise a solution of (2S,4S)-1-allyloxycarbonyl-4-mercapto-2-[(ureidocarbonylmethyl)oxymethyl]pyrrolidine (0.35 g) in a mixture of dimethylformamide (1 ml) and acetonitrile (3 ml), and N,N-diisopropyl-N-ethylamine (0.35 ml) successively with stirring at 0°-5° C., and the stirring was continued at the same temperature for 3 hours. To a reaction mixture was added ethyl acetate (50 ml) and water (50 ml) with stirring, and the organic layer was separated.

후처리

  1. temperatureunder reflux
  2. temperatureAfter refluxing for 20 minutes, to the solution
  3. temperatureThe mixture was refluxed for 40 minutes
  4. temperatureThe reaction mixture was cooled
  5. customevaporated in vacuo
  6. customto give a residue
  7. customevaporated
  8. customthe resulting residue was dried in vacuo

출처 및 근거

ORD 기록
ord-80872ea51147426f923bb4baea2d19c7
출처 데이터셋
uspto-grants-1990_10
특허 번호
US04963543

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