Diisopropylcarbodiimide → {2-[2-({4-[3-[3-(4-Fluorophenyl)-3-hydroxypropyl]-2-(4-methoxyphenyl)-4-oxoazetidin-1-yl]benzylcarbamoyl}methoxy)ethoxy]ethoxy}acetic acid

Participants

Reaction Steps

A solution of 64 mg of 1-(4-aminomethylphenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-methoxyphenyl)azetidin-2-one (5), and 21 μl of triethylamine in 1 ml of dimethylformamide was added to a solution of 327 mg of 3,6,9-trioxaundecanedioic acid, 57 μl of diisopropylcarbodiimide, 50 mg of hydroxybenzotriazole in 2 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 638.70 (C34H39F1N2O9); MS (ESI) 639.27 (M+H+)

Provenance & Evidence