To a microwave vial equipped with a stir bar was added 3-pyridin-4-yl-1-trityl-1H indazole-5-carboxylic acid (155.4 mg, 0.323 mmol), HOBT (74.1 mg, 0.484 mmol), EDC (93 mg, 0.484 mmol), DIPEA (225 μl, 1.291 mmol), tert-butyl 3-amino-5-phenylpiperidine-1-carboxylate (89 mg, 0.323 mmol), and DMF (3227 μl). The vial was sealed and heated to 45° C. The LCMS taken after 4 hours indicates formation of the desired product. The material was filtered through a column pre-packed with celite and was concentrated under reduced pressure. A column was run from 100% hexanes to 100% ethyl acetate. The desired product eluted and fractions were collected and concentrated in vacuo. The material was dissolved in acetonitrile and water and was dried on the lyophilizer.
