Diisopropylcarbodiimide → {4-[3-[3-(4-Fluorophenyl)-3-hydroxypropyl]-2-(4-methoxyphenyl)-4-oxoazetidin-1-yl]benzylcarbamoyl}methanesulfonic Acid

Beteiligte Stoffe

Reaktionsschritte

A solution of 60 mg of 1-(4-aminomethylphenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]4-(4-methoxyphenyl)azetidin-2-one (5) in 1 ml of dimethylformamide was added to a solution of 20 mg of sulfoacetic acid, 55 μl of diisopropylcarbodiimide, 38 mg of hydroxybenzotriazole in 1 ml of dimethylformamide, and the mixture was stirred at room temperature for 12 h. The reaction solution was concentrated and separated by HPLC (Knauer Eurospher-100-10-C18, water (0.1% trifluoroacetic acid)/acetonitrile (0.1% trifluoroacetic acid)=80/20→10/90). This gave the product of molecular weight 556.61 (C28H29F1N2O7S1); MS (ESI) 539.05 (M+H+—H2O)

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