HCID 67050611, compound → HCID 58203868, compound

Participants

Reaction Steps

Phosphoric acid dibenzyl ester 2-{4-[2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl]-pyrazol-1-yl}-ethyl ester (180 mg, 0.26 mmol) was dissolved in methanol:EtOAc (1:1, 6 mL) and the solution was flushed with bubbling nitrogen. Palladium hydroxide (5% on carbon, 40 mg) was added and the reaction mixture was placed under hydrogen atmosphere (1 atm, balloon) overnight while rapidly stirred. Filtration over celite and concentration of the filtrate gave 482. Lyophilization of a solution in acetonitrile and 1% NH4OH in water gave 482 as the bis-ammonium salt.

Provenance & Evidence