Pyridine → tert-butyl 2-(3-(6-(5-(N-tert-butylsulfamoyl)pyridin-3-yl)-[1,2,4]triazolo[1,5-a]pyridin-2-yl)ureido)ethylcarbamate

Participants

Reaction Conditions

Reaction Steps

5-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-6-yl)-pyridine-3-sulfonic acid tert-butylamide (50 mg, 0.14 mmol) was suspended in tetrahydrofuran:pyridine (30 mL, 5:1) and cooled to 0° C. Triphosgene (41 mg, 0.14 mmol) was added in one portion and the reaction mixture heated at 35° C. for 2 hours. After this time the solvent was decanted and the resultant semi-solid dissolved in DMF:pyridine (1 mL, 10:1), N-Boc-ethylenediamine (50 mg, 0.32 mmol) was added in one portion and the reaction mixture heated for 18 hours at 65° C. The desired product was isolated as a white solid, directly from the reaction mixture, by preparative HPLC (35 mg)

Provenance & Evidence