5-Methylthiophene-2-sulfonyl chloride → 4-[(4-(Methyloxy)-3-{[(5-methyl-2-thienyl)sulfonyl]amino}-1H-indazol-1-yl)methyl]benzamide

Participants

Reaction Steps

A solution of 4-{[3-amino-4-(methyloxy)-1H-indazol-1-yl]methyl}benzamide (32.4 mg, 0.2 mmol) in pyridine 3.6 mL) was added to 5-methyl-thiophenesulfonyl chloride (for a preparation see Intermediate 32) (0.30 mmol). The reaction mixture was shaken briefly and allowed to stand for 3 h at 21° C. prior to concentration by blowdown. The residue was dissolved in 1:1 MeOH-DMSO (0.6 mL) and purified by Mass Directed AutoPrep on Xbridge column using Acetonitrile Water with an ammonium carbonate modifier (Method C). The solvent was evaporated in vacuo using the Genevac to give the title compound (12.5 mg, 14%). LCMS (System A) RT=0.86 min, ES+ve m/z 457 (M+H)+.

Provenance & Evidence