Acetic Acid → N1-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N1-[(6-methyl-3'-{[(3R)-3-methyl-1-piperazinyl]methyl}-3-biphenylyl)methyl]-1,1-cyclopropanedicarboxamide

HRID 657419Notes

Reaction equation

HRID 657419 reaction equation
[CH2:1]([N:3]1[C:7]2=[N:8][C:9]([CH2:45][CH3:46])=[C:10]([CH2:19][N:20]([CH2:29][C:30]3[CH:31]=[C:32]([C:37]4[CH:42]=[CH:41][CH:40]=[C:39]([CH:43]=O)[CH:38]=4)[C:33]([CH3:36])=[CH:34][CH:35]=3)[C:21]([C:23]3([C:26]([NH2:28])=[O:27])[CH2:25][CH2:24]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].C([N:54]1[CH2:59][CH2:58][NH:57][CH2:56][C@@H:55]1[CH3:60])(OC(C)(C)C)=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(O)(=O)C>C(Cl)Cl.C(O)(C(F)(F)F)=O>[CH2:1]([N:3]1[C:7]2=[N:8][C:9]([CH2:45][CH3:46])=[C:10]([CH2:19][N:20]([CH2:29][C:30]3[CH:31]=[C:32]([C:37]4[CH:42]=[CH:41][CH:40]=[C:39]([CH2:43][N:57]5[CH2:58][CH2:59][NH:54][C@H:55]([CH3:60])[CH2:56]5)[CH:38]=4)[C:33]([CH3:36])=[CH:34][CH:35]=3)[C:21]([C:23]3([C:26]([NH2:28])=[O:27])[CH2:24][CH2:25]3)=[O:22])[C:11]([NH:12][CH:13]3[CH2:14][CH2:15][O:16][CH2:17][CH2:18]3)=[C:6]2[CH:5]=[N:4]1)[CH3:2]

Participants

7

Reactant 4

HCID 176Acetic AcidHCID 5049666Sodium triacetoxyborohydrideHCID 10081508tert-Butyl (2S)-2-methylpiperazine-1-carboxylateHCID 86633356N1-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N1-[(3'-formyl-6-methyl-3-biphenylyl)methyl]-1,1-cyclopropanedicarboxamide

Product 1

HCID 69012047N1-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N1-[(6-methyl-3'-{[(3R)-3-methyl-1-piperazinyl]methyl}-3-biphenylyl)methyl]-1,1-cyclopropanedicarboxamideYield 56.3%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolvent2×HCID 6422Trifluoroacetic acidSolvent

Procedure

A mixture of N1-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N1-[(3′-formyl-6-methyl-3-biphenylyl)methyl]-1,1-cyclopropanedicarboxamide (55 mg, 0.088 mmol), (S)—N1-Boc-2-methyl-piperazine (17.69 mg, 0.088 mmol), sodium triacetoxyborohydride (37.4 mg, 0.177 mmol) and acetic acid (6.07 μL, 0.106 mmol) in DCM (2 mL) was stirred at room temperature overnight. The reaction mixture was quenched with saturated NaHCO3 and extracted with DCM twice. The combined organic layers were concentrated under vacuum to give the crude residue. It was re-dissolved in 25% TFA in DCM (2 mL) and stirred at room temperature for 2 h. Solvent was evaporated under a stream of nitrogen and then purified with a Gilson HPLC (with 0.1% TFA in the solvents), eluting with 10 to 60% CH3CN in water at a flow rate of 20 mL/min. The product fractions were combined, washed with saturated NaHCO3 and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over sodium sulfate, filtered and then concentrated under vacuum to give N1-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N1-[(6-methyl-3′-{[(3R)-3-methyl-1-piperazinyl]methyl}-3-biphenylyl)methyl]-1,1-cyclopropanedicarboxamide as a solid (35 mg, 56.1%). LC-MS m/z 707 (M+H)+, 0.74 min (ret time).

Workup

  1. customThe reaction mixture was quenched with saturated NaHCO3
  2. extractionextracted with DCM twice
  3. concentrationThe combined organic layers were concentrated under vacuum
  4. customto give the crude residue
  5. stirringstirred at room temperature for 2 h
  6. customSolvent was evaporated under a stream of nitrogen
  7. custompurified with a Gilson HPLC (with 0.1% TFA in the solvents),
  8. washeluting with 10 to 60% CH3CN in water at a flow rate of 20 mL/min
  9. washwashed with saturated NaHCO3
  10. extractionextracted with ethyl acetate twice
  11. washThe combined organic layers were washed with brine
  12. dry with materialdried over sodium sulfate
  13. filtrationfiltered
  14. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-eae439dad71046318f23e57f09016909
Source dataset
uspto-grants-2011_12
Patent number
US08071588B2

Reaction notes

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