Acetic Acid → N-{[1,6-Diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N'-{[2-methyl-3'-(1-piperazinylmethyl)-3-biphenylyl]methyl}-1,3-benzenedicarboxamide

HRID 564623Notes

Reaction equation

HRID 564623 reaction equation
[CH2:1]([N:3]1[C:7]2=[N:8][C:9]([CH2:48][CH3:49])=[C:10]([CH2:19][NH:20][C:21]([C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([NH:31][CH2:32][C:33]4[C:34]([CH3:47])=[C:35]([C:39]5[CH:44]=[CH:43][CH:42]=[C:41](C=O)[CH:40]=5)[CH:36]=[CH:37][CH:38]=4)=[O:30])[CH:24]=3)=[O:22])[C:11]([NH:12][CH:13]3[CH2:18][CH2:17][O:16][CH2:15][CH2:14]3)=[C:6]2[CH:5]=[N:4]1)[CH3:2].[N:50]1([C:56](OC(C)(C)C)=O)[CH2:55][CH2:54][NH:53][CH2:52][CH2:51]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].CC(O)=O>ClCCCl>[CH2:1]([N:3]1[C:7]2=[N:8][C:9]([CH2:48][CH3:49])=[C:10]([CH2:19][NH:20][C:21]([C:23]3[CH:28]=[CH:27][CH:26]=[C:25]([C:29]([NH:31][CH2:32][C:33]4[C:34]([CH3:47])=[C:35]([C:39]5[CH:44]=[CH:43][CH:42]=[C:41]([CH2:56][N:50]6[CH2:51][CH2:52][NH:53][CH2:54][CH2:55]6)[CH:40]=5)[CH:36]=[CH:37][CH:38]=4)=[O:30])[CH:24]=3)=[O:22])[C:11]([NH:12][CH:13]3[CH2:18][CH2:17][O:16][CH2:15][CH2:14]3)=[C:6]2[CH:5]=[N:4]1)[CH3:2]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 143452tert-Butyl piperazine-1-carboxylateHCID 5049666Sodium triacetoxyborohydrideHCID 57813263HCID 57813263, compound

Product 1

HCID 57813348N-{[1,6-Diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N'-{[2-methyl-3'-(1-piperazinylmethyl)-3-biphenylyl]methyl}-1,3-benzenedicarboxamideYield 19%

Reagents, catalysts & solvents 1

HCID 111,2-DichloroethaneSolvent

Procedure

N-{[1,6-Diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N′-[(3′-formyl-2-methyl-3-biphenylyl)methyl]-1,3-benzenedicarboxamide (100 mg, 0.000152 mol) in 1,2-dichloroethane (4 mL), 1,1-dimethylethyl 1-piperazinecarboxylate (44.6 mg, 0.00024 mol) and sodium triacetoxyborohydride (68 mg, 0.00032 mol) and AcOH (12 μL) was placed on an oscillating shaker overnight at room temperature. The reaction was quenched with sat. aq. NaHCO3, then extracted with 1,2-dichloroethane (2×). Combined organic extracts were washed with sat. aq. NaCl and dried (Na2SO4) and concentrated to a residue. The crude product was taken up in 1,2-dichloroethane (10 mL) containing 25% TFA and allowed to stand at room temperature for 3 h. LC-MS showed the reaction to be complete. Solvent was stripped off. Purification was carried out on a Gilson HPLC instrument with acetonitrile-water (0.1% TFA) gradient; C18-RP column. Fractions containing the clean desired product were combined; diluted with EtOAc; washed with sat. aq. NaHCO3; aq. phase was back-extracted with EtOAc. Combined organic extracts were washed with sat. aq. NaCl and dried (Na2SO4) and concentrated to a residue. It was taken up in a small amount of 1,2-dichloroethane and transferred to a vial and pumped down to afford the title compound as a beige colored solid [21 mg (19%)]. LC-MS m/z 729.6 (M+H)+.

Workup

  1. customwas placed on an oscillating shaker overnight at room temperature
  2. customThe reaction was quenched with sat. aq. NaHCO3
  3. extractionextracted with 1,2-dichloroethane (2×)
  4. washCombined organic extracts were washed with sat. aq. NaCl
  5. dry with materialdried (Na2SO4)
  6. concentrationconcentrated to a residue
  7. additioncontaining 25% TFA
  8. customthe reaction
  9. customPurification
  10. additionFractions containing the clean desired product
  11. additiondiluted with EtOAc
  12. washwashed with sat. aq. NaHCO3
  13. extractionaq. phase was back-extracted with EtOAc
  14. washCombined organic extracts were washed with sat. aq. NaCl
  15. dry with materialdried (Na2SO4)
  16. concentrationconcentrated to a residue

Sources & evidence

ORD record
ord-a5d6b0271d8a4645b075ad6b5302f024
Source dataset
uspto-grants-2011_11
Patent number
US08067408B2

Reaction notes

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