2-(Aminomethyl)-5-fluoro-n-methylbenzamide trifluoroacetate salt → n-(4-Fluoro-2-(methylcarbamoyl)benzyl)-6-(benzyloxy)-1-isopropyl-5-oxo-1,2,3,5-tetrahydroimidazo[1,2-a]pyrimidine-7-carboxamide

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Reaction Steps

Coupling of 6-(benzyloxy)-1-isopropyl-5-oxo-1,2,3,5-tetrahydroimidazo[1,2-a]pyrimidine-7-carboxylic acid (0.300 g, 0.91 mmol) and 2-(aminomethyl)-5-fluoro-N-methylbenzamide trifluoroacetate salt (0.210 g, 0.96 mmol) as described for the synthesis of intermediate 3 gave 0.328 g (72% yield) of the title amide as white crystals; mp 197-198° C. (ethyl acetate). 1HNMR 400 MHz (CDCl3) δ (ppm): 1.23 (6H, d, J=6.8 Hz, 2×CH3), 2.98 (3H, d, J=5 Hz, NCH3), 3.66 (2H, t, J=9 Hz, CH2), 4.12 (2H, t, J=9 Hz, CH2), 4.43 (1H, m, CH), 4.48 (2H, d, J=6.3 Hz, NCH2), 5.09 (2H, s, OCH2), 7.05 (1H, m, aromatic), 7.13-7.17 (2H, m, aromatics), 7.3-7.35 (4H, m, NH and aromatics), 7.43-7.46 (2H, m, aromatics), 8.35 (1H, broad t, NH). Anal. Calcd for C26H28FN5O4: C, 63.27; H, 5.71; N, 14.19. Found: C, 63.06; H, 5.65; N, 14.02.

Provenance & Evidence