Acetic Acid → N2-{[4-((2R,3R)-1-(4-fluorophenyl)-3-{[2-(4-fluorophenyl)-2-hydroxyethyl]thio}-4-oxoazetidin-2-yl)phenoxy]acetyl}-L-glutamine

HRID 250299Notes

Reaction equation

HRID 250299 reaction equation
[F:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:11](=[O:12])[C@H:10]([S:13][CH2:14][C:15]([C:17]3[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=3)=[O:16])[C@H:9]2[C:24]2[CH:34]=[CH:33][C:27]([O:28][CH2:29][C:30](O)=[O:31])=[CH:26][CH:25]=2)=[CH:4][CH:3]=1.Cl.[NH2:36][C@H:37]([C:43]([O:45]C(C)(C)C)=[O:44])[CH2:38][CH2:39][C:40](=[O:42])[NH2:41].CN1CCOCC1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.[BH4-].[Na+].C(O)(=O)C>C(Cl)Cl.CS(C)=O>[F:1][C:2]1[CH:3]=[CH:4][C:5]([N:8]2[C:11](=[O:12])[C@H:10]([S:13][CH2:14][CH:15]([C:17]3[CH:22]=[CH:21][C:20]([F:23])=[CH:19][CH:18]=3)[OH:16])[C@H:9]2[C:24]2[CH:34]=[CH:33][C:27]([O:28][CH2:29][C:30]([NH:36][C@H:37]([C:43]([OH:45])=[O:44])[CH2:38][CH2:39][C:40](=[O:42])[NH2:41])=[O:31])=[CH:26][CH:25]=2)=[CH:6][CH:7]=1

Participants

9

Reactant 6

HCID 176Acetic AcidHCID 79724-MethylmorpholineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 4311764Sodium borohydrideHCID 15602445H-Gln-OtBu hydrochlorideHCID 66842813[4-((2R,3R)-1-(4-Fluorophenyl)-3-{[2-(4-fluorophenyl)-2-oxoethyl]thio}-4-oxoazetidin-2-yl)phenoxy]acetic acid

Product 1

HCID 66842599N2-{[4-((2R,3R)-1-(4-fluorophenyl)-3-{[2-(4-fluorophenyl)-2-hydroxyethyl]thio}-4-oxoazetidin-2-yl)phenoxy]acetyl}-L-glutamine

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 6344DichloromethaneSolvent

Procedure

[4-((2R,3R)-1-(4-fluorophenyl)-3-{[2-(4-fluorophenyl)-2-oxoethyl]thio}-4-oxoazetidin-2-yl)phenoxy]acetic acid (50 mg, 0.103 mmol), tert-butyl L-glutaminate hydrochloride (30 mg, 0.124 mmol) and N-methylmorpholine (40 mg, 0.396 mmol) were dissolved in methylene chloride (1 ml). TBTU (40 mg, 0.125 mmol) was added and the mixture was stirred for 90 min at room temperature. The solvent was evaporated and the residue was dissolved in formic acid (1 ml). The mixture was heated to 45-50° C. and stirred at this temperature for 4 h. The reaction mixture was evaporated under reduced pressure. Toluene (5 ml) was added and evaporated. The residue was dissolved in methanol (1 ml). NaBH4 (30 mg, 0.793 mmol) was added and the mixture was stirred for 15 min at room temperature. Acetic acid (50 mg, 0.83 mmol) was added and the reaction mixture was evaporated under reduced pressure. The residue was purified by preparative HPLC using acetonitrile/ammonium acetate buffer (35:65) as eluent. After freeze-drying 47 mg (74%) of the title compound was obtained. 1H-NMR, 300 MHz, DMSO): 1.72-2.16 (m, 4H), 2.81-2.95 (m, 2H), 4.08-4.20 (m, 1H), 4.26-4.31 (m, 1H), 4.50 (s, 2H), 4.65-4.78 (m, 1H), 5.03-5.08 (m, 1H), 6.68 (s, 1H), 6.89-7.44 (m, 14H), 8.29 (d, 1H).

Workup

  1. customThe solvent was evaporated
  2. dissolutionthe residue was dissolved in formic acid (1 ml)
  3. temperatureThe mixture was heated to 45-50° C.
  4. stirringstirred at this temperature for 4 h
  5. customThe reaction mixture was evaporated under reduced pressure
  6. additionToluene (5 ml) was added
  7. customevaporated
  8. dissolutionThe residue was dissolved in methanol (1 ml)
  9. stirringthe mixture was stirred for 15 min at room temperature
  10. customthe reaction mixture was evaporated under reduced pressure
  11. customThe residue was purified by preparative HPLC
  12. dry with materialAfter freeze-drying 47 mg (74%) of the title compound
  13. customwas obtained

Sources & evidence

ORD record
ord-a45b751424e6425f927a834156fef031
Source dataset
uspto-grants-2011_01
Patent number
US07863265B2

Reaction notes

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