Benzyl Bromide → N-[2-(1-(triphenylmethyl)imidazol-4-yl)ethyl]-N'-tert-butoxycarbonyl-N'-phenylmethyl-sulfamide

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Reaction Steps

4-(2-Aminoethyl)-1-(triphenylmethyl)-imidazole (Example 17 step b) was converted to N-2-[1-(triphenylmethyl)imidazol-4-yl]ethyl-N'-tert-butoxycarbonyl-sulfamide according to the procedure of Example 12 step a. The subsequent alkylation with benzyl bromide was performed essentially as Example 12 step b and gave N-[2-(1-(triphenylmethyl)imidazol-4-yl)ethyl]-N'-tert-butoxycarbonyl-N'-phenylmethyl-sulfamide. The final deprotection was carried out in the manner of Example 17 step b and the title compound (Rf 0.21; 1:10:90 ammonia(880)/methanol/dichloromethane) was isolated as a colourless oil: 1H NMR (300 Hz, d6 -DMSO) 7.50(1H, s), 7.30(6H, m), 6.95(1H, t), 6.78(1H, s), 3.96(2H, s), 3.03(2H, dd), 2.65(2H, t). The maleate salt was prepared by lyophilysis of an equimolar solution of the product and maleic acid in water/dioxan. Found: C 48.05, H 5.10, N 13.87%; C16H2ON4O6S requires: C 48.48, H 5.09 N 14.13%.

Provenance & Evidence