反应详情

A solution of N-[(5S)-3,9,10,11-tetramethoxy-6,7-dihydro-5H-dibenzo[a,c]cyclohepten-5-yl]-2-[2-(butoxycarbonylamino)acetylamino]acetamide (0.9 g; 0.64 mmol) in dichloromethane (6 ml) was treated with TFA (6 ml) at ambient temperature for 0.5 hour. After evaporation to dryness, the residue was neutralised to pH 6.5 with solid sodium hydrogen carbonate and purified on reverse phase silica eluting with a gradient of 30-40% methanol/ammonium carbonate buffer (2 g/1, pH 7). The appropriate fractions were evaporated to dryness and triturated in ether to give the title compound.

1. customAfter evaporation to dryness
2. custompurified on reverse phase silica eluting with a gradient of 30-40% methanol/ammonium carbonate buffer (2 g/1, pH 7)
3. customThe appropriate fractions were evaporated to dryness
4. customtriturated in ether