6-[(5-Methyl-3-phenyl-isoxazol-4-ylmethyl)-amino]-pyridazine-3-carboxylic acid methyl ester → 6-{[3-(4-Fluoro-phenyl)-5-methyl-isoxazol-4-ylmethyl]-amino}-pyridazine-3-carboxylic acid cyclopropylmethyl-amide

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Reaction Steps

As described for example 73c, 6-{[3-(4-fluoro-phenyl)-5-methyl-isoxazol-4-ylmethyl]-amino}-pyridazine-3-carboxylic acid ethyl ester (89 mg, 0.25 mmol) was converted, instead of 6-[(5-methyl-3-phenyl-isoxazol-4-ylmethyl)-amino]-pyridazine-3-carboxylic acid methyl ester, to the title compound (87 mg, 91%) which was obtained as an off white foam. MS: m/e=382.4 [M+H]+.

Provenance & Evidence