3-Nitrobenzoic acid → 3-Methylphenylalanine

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N-[1-(2-Chloro-6-methylphenyl)carbonyl]-4-[[2-(3-nitrophenyl))-1-oxoethyl]amino]-3-methyl-L-phenylalanine was prepared from 4-amino-3-methyl-N-[[(2-chloro-6-methylphenyl)carbonyl]-L-phenylalanine methyl ester (52 mg) and 3-nitrobenzoic acid (32 mg, 0.19 mmol) using the procedure described in example 120 to give 15 mg of a white powder. HR MS (C25H22N3O6Cl): Obs. Mass 496.1288. Calcd. Mass 496.1288 (M+H).

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