Hydrochloric Acid → HCID 52933867, compound

Participants

Reaction Steps

To a solution of 1-methylethyl((2S,4R)-1-acetyl-6-{3-[2-({[(1,1-dimethylethyl)oxy]carbonyl}amino)ethyl]-1,2,4-oxadiazol-5-yl}-2-methyl-1,2,3,4-tetrahydro-4-quinolinyl)carbamate (for a preparation, see Intermediate 66) (100 mg, 0.199 mmol) in 1,4-dioxane (0.5 mL) at room temperature was added HCl (4N in 1,4-dioxane, 2 mL, 8.00 mmol) and the resulting mixture was stirred at this temperature for 3 h then was left standing at 4° C. for 16 h before being warmed to room temperature. The residue was triturated with Et2O then purified using MDAP (modifier: ammonium bicarbonate). The residue obtained was dissolved in 1,4-dioxane (2 mL) and treated with HCl (4N in 1,4-dioxane, 1 mL). The resulting mixture was concentrated in vacuo and the residue triturated with Et2O to give 1-methylethyl {(2S,4R)-1-acetyl-6-[3-(2-aminoethyl)-1,2,4-oxadiazol-5-yl]-2-methyl-1,2,3,4-tetrahydro-4-quinolinyl}carbamate hydrochloride (10 mg, 0.023 mmol, 11.45% yield) as a colourless solid.

Provenance & Evidence