Trifluoroacetic acid → HCID 44193618, compound

Participants

Reaction Steps

To 6-[({[1,6-diethyl-4-(tetrahydro-2H-pyran-4-ylamino)-1H-pyrazolo[3,4-b]pyridin-5-yl]methyl}amino)carbonyl]-2-pyridinecarboxylic acid (30 mg, 0.066 mmol) was added 1,1-dimethylethyl (2S)-4-({3-[4-(aminomethyl)-2-pyridinyl]phenyl}methyl)-2-methyl-1-piperazinecarboxylate (26.3 mg, 0.066 mmol), followed by HBTU (30.2 mg, 0.080 mmol) and TEA (18.48 μl, 0.133 mmol) in dichloromethane (DCM) (663 μL) to give a reaction mixture which was stirred at room temperature overnight. Then the reaction was quenched with H2O (1 drop) and the solvent was removed using a Glas-Col. The crude product was redissolved in MeOH/DMSO (1/1) and purified by Gilson HPLC (acidic condition). Product fractions were evaporated by GeneVac EZ-2 evaporator. To this material was added TFA (0.102 mL, 1.33 mmol) in dichloromethane (0.2 mL) and it was placed in the Glas-Col evaporator overnight. It was redissolved in MeOH/DMSO and purified using a Gilson HPLC (acidic condition). Product fractions were evaporated by GeneVac EZ-2 evaporator, basified by cartridge to afford 19.1 mg (37%) of the title compound. LC-MS m/z 731 (M+H)+.

Provenance & Evidence