4-(2-Methyl-2H-tetrazol-5-yl)benzoic acid → HCID 71208701, compound

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3-{[4-(2-Methyl-2H-tetrazol-5-yl)-benzoylamino]-methyl}-4-oxo-1-phenyl-7-trifluoromethyl-1,4-dihydro-[1,8]-naphthyridine-2-carboxylic acid methyl ester was prepared starting from intermediate J and 4-(2-methyl-2H-tetrazol-5-yl)-benzoic acid. 1H NMR (300 MHz, DMSO-d6) δ ppm 8.91 (d, J=8.15 Hz, 1H) 8.71 (br. s., 1H) 8.07-8.17 (m, 2H) 7.90-8.03 (m, 3H) 7.52-7.62 (m, 3H) 7.39-7.50 (m, 2H) 4.48 (d, J=4.83 Hz, 2H) 4.44 (s, 3H) 3.41 (s, 3H). LCMS calcd. for C27H20F3N7O4 [(M+H)+] 563.1, obsd. 564.1.

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