1-Hydroxybenzotriazole → HCID 67424004, compound

Participants

Reaction Steps

A mixture of compound 7B (240 mg, 0.702 mmol), Boc-N-methyl-D-valine (176 mg, 0.762 mmol), 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide hydrochloride (208 mg, 1.085 mmol), 1-hydroxybenzotriazole (146 mg, 1.085 mmol), dichloromethane (5 mL) and THF (2.5 mL) was stirred at room temperature overnight. The solvent was evaporated under reduced pressure and the residue was dissolved in minimum amount of dichloromethane and purified on silica gel column, which was eluted with 0.5% ammonium hydroxide and 5% methanol in dichloromethane to give the desired product (282 mg, 72% yield).

Provenance & Evidence