Hydrochloric Acid → (3r)-n-[(3-{[3-{[(5-Chloro-2-thienyl)sulfonyl]amino}-4-(1-hydroxy-1-methylethyl)-1h-indazol-1-yl]methyl}phenyl)methyl]-3-morpholinecarboxamide formate salt

Participants

Reaction Steps

DIPEA (0.057 mL, 0.326 mmol) was added to a stirring solution of (3R)-4-{[(1,1-dimethylethyl)oxy]carbonyl}-3-morpholinecarboxylic acid (18.84 mg, 0.081 mmol) in DCM (1 mL). HATU (31.0 mg, 0.081 mmol) was then added, followed by N-[1-{[3-(aminomethyl)phenyl]methyl}-4-(1-hydroxy-1-methylethyl)-1H-indazol-3-yl]-5-chloro-2-thiophenesulfonamide (for a preparation see Intermediate 78) (40 mg, 0.081 mmol) and the reaction was stirred for an hour at room temp. The reaction mixture was concentrated and 4N Hydrogen chloride in dioxane (0.020 mL, 0.081 mmol) was then added and the reaction stirred at room temperature for 0.5 h. The reaction mixture was passed through a pre-conditioned (MeOH) SCX-2 cartridge, washed with methanol and then eluted using 2M ammonia in methanol. The appropriate ammoniacal fractions were concentrated, and the residue was dissolved in DMSO (0.5 mL) and purified by Mass Directed AutoPrep on Sunfire C18 column using Acetonitrile Water with a Formic acid modifier (Method A). The solvent was removed under a stream of nitrogen in the Radleys blowdown apparatus to give the title compound (2.7 mg, 5%). LCMS (System F) RT=0.84 min, ES+ve m/z 604/606 (M+H)+.

Provenance & Evidence