Diisopropylcarbodiimide → N-(3-{1-(4-Fluorophenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxoazetidin-2-yl}-benzyl)-2-{2-[2-({2-[2-(3,4,5,6,7-pentahydroxy-2-oxo-heptyloxy)ethoxy]ethyl-carbamoyl}methoxy)ethoxy]ethoxy}acetamide

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Reaction Steps

29 is prepared similarly to 18 starting from 62 mg of 4-(3-aminomethylphenyl)-1-(4-fluorophenyl)-3-[3-(4-fluorophenyl)-3-hydroxypropyl]azetidin-2-one 15, 76 mg of {2-[2-({2-[2-(3,4,5,6,7-pentahydroxy-2-oxoheptyloxy)ethoxy]ethylcarbamoyl}methoxy)-ethoxy]ethoxy}acetic acid 26, 57 μl of diisopropylcarbodiimide and 40 mg of hydroxybenzotriazole in 2 ml of dimethylformamide. This gives 29:

Provenance & Evidence