Reacción #435929

ord-3f35a7569eac49428d37808066d592bb

Disolventes

Condiciones de reacción

Condiciones detalladas
See reaction.notes.procedure_details.

Tratamiento posterior

  1. 1
    Temperaturacooled with ice
  2. 2
    workup.ADDITIONThen, the solution was gradually added with a solution
  3. 3
    Otroprepared
  4. 4
    workup.STIRRINGby stirring at room temperature for 3 hours
  5. 5
    OtroAfter completion of the reaction
  6. 6
    workup.DISTILLATIONthe solvent was distilled off
  7. 7
    Otrothe residue was then purified through silica gel column chromatography (chloroform/ethyl acetate)

Procedimiento

The compound (675.0 mg) obtained in Example 123-1 was suspended in anhydrous THF (30 ml) and cooled with ice. Then, the suspension was added with a 2 mol/l lithium diisopropylamide/heptane solution (0.825 ml), followed by stirring at room temperature for 1 hour. Then, the solution was gradually added with a solution prepared by suspending the compound (327.9 mg) obtained in Example 119-7 in anhydrous THF (20 ml), followed by stirring at room temperature for 3 hours. After completion of the reaction, the solvent was distilled off and the residue was then purified through silica gel column chromatography (chloroform/ethyl acetate), thereby obtaining the subject compound (268.0 mg) as a yellow solid.

Fuente

DOI: 10.6084/m9.figshare.5104873.v1Patente: US07176227B2uspto-grants-2007_02