Sodium Carbonate → 1,1-dimethylethyl (2S)-4-{[5'-{[({6-[({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)carbonyl]-2-pyridinyl}carbonyl)amino]methyl}-2'-(methyloxy)-3-biphenylyl]methyl}-2-methyl-1-piperazinecarboxylate

HRID 662124Notes

Reaction equation

Br[C:2]1[CH:3]=[C:4]([CH2:10][NH:11][C:12]([C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([C:20]([NH:22][CH2:23][C:24]3[C:25]([NH:37][CH:38]4[CH2:43][CH2:42][O:41][CH2:40][CH2:39]4)=[C:26]4[CH:34]=[N:33][N:32]([CH2:35][CH3:36])[C:27]4=[N:28][C:29]=3[CH2:30][CH3:31])=[O:21])[N:15]=2)=[O:13])[CH:5]=[CH:6][C:7]=1[O:8][CH3:9].[CH3:44][C@H:45]1[CH2:50][N:49]([CH2:51][C:52]2[CH:57]=[CH:56][CH:55]=[C:54](B3OC(C)(C)C(C)(C)O3)[CH:53]=2)[CH2:48][CH2:47][N:46]1[C:67]([O:69][C:70]([CH3:73])([CH3:72])[CH3:71])=[O:68].C([O-])([O-])=O.[Na+].[Na+]>O1CCOCC1.O.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[CH2:35]([N:32]1[C:27]2=[N:28][C:29]([CH2:30][CH3:31])=[C:24]([CH2:23][NH:22][C:20]([C:16]3[N:15]=[C:14]([C:12]([NH:11][CH2:10][C:4]4[CH:5]=[CH:6][C:7]([O:8][CH3:9])=[C:2]([C:56]5[CH:55]=[CH:54][CH:53]=[C:52]([CH2:51][N:49]6[CH2:48][CH2:47][N:46]([C:67]([O:69][C:70]([CH3:73])([CH3:72])[CH3:71])=[O:68])[C@@H:45]([CH3:44])[CH2:50]6)[CH:57]=5)[CH:3]=4)=[O:13])[CH:19]=[CH:18][CH:17]=3)=[O:21])[C:25]([NH:37][CH:38]3[CH2:43][CH2:42][O:41][CH2:40][CH2:39]3)=[C:26]2[CH:34]=[N:33]1)[CH3:36]

Participants

Conditions

Temperature: 100 °C

Procedure

A mixture of N-{[3-bromo-4-(methyloxy)phenyl]methyl}-N′-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-2,6-pyridinedicarboxamide (200 mg, 0.307 mmol), 1,1-dimethylethyl (2S)-2-methyl-4-{[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl}-1-piperazinecarboxylate (128 mg, 0.307 mmol), Na2CO3 (98 mg, 0.922 mmol) and PdCl2(dppf) (22.49 mg, 0.031 mmol) was diluted in a mixture of 1,4-dioxane (3 mL) and water (1 mL) in a 2-5 mL Biotage microwave reaction tube. The mixture was degassed by bubbling argon through it for 5 minutes and was then heated in a Biotage microwave at normal absorption for 30 minutes at 100° C. The crude mixture was filtered through a PL-Thiol MP SPE+ and was then washed with ethyl acetate and water. The organic layer was concentrated under vacuum to obtain the crude residue. It was purified with a Gilson HPLC (with 0.1% TFA in the solvents), eluting with 10 to 70% CH3CN in water at a flow rate of 20 mL/min. The product fractions were dried using a EZ2 GeneVac evaporator and then combined to give 1,1-dimethylethyl (2S)-4-{[5′-{[({6-[({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)carbonyl]-2-pyridinyl}carbonyl)amino]methyl}-2′-(methyloxy)-3-biphenylyl]methyl}-2-methyl-1-piperazinecarboxylate. 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 the residue was 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 and converted to the free base with 1 N NaOH, and the basified solution was 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 N-{[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}-N′-[(6-(methyloxy)-3′-{[(3S)-3-methyl-1-piperazinyl]methyl}-3-biphenylyl)methyl]-2,6-pyridinedicarboxamide as a solid (75 mg, 32.1%). LC-MS m/z 760 (M+H)+, 0.80 min (ret time).

Workup

customThe mixture was degassed
customby bubbling argon through it for 5 minutes
filtrationThe crude mixture was filtered through a PL-Thiol MP SPE+
washwas then washed with ethyl acetate and water
concentrationThe organic layer was concentrated under vacuum
customto obtain the crude residue
customIt was purified with a Gilson HPLC (with 0.1% TFA in the solvents),
washeluting with 10 to 70% CH3CN in water at a flow rate of 20 mL/min
customThe product fractions were dried
customa EZ2 GeneVac evaporator

Sources & evidence

ORD record: ord-32c51f75c05047d19305a54932c0a308
Source dataset: uspto-grants-2011_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08084449B2

Reaction notes

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