Dichloromethane → (2S)-[5-Chloro-2-(5-dibutylamino-naphthalene-1-sulfonylamino)-benzoylamin o]-3-(2'-phenoxy-biphenyl-4-yl)-propionic acid methyl ester

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A solution of 2-(2-amino-5-chloro-benzoylamino)-3-(2′-phenoxy-biphenyl-4-yl)-propionic acid (0.05 g, 0.1 mmol) [prepared by reacting (2S)-amino-3-(2′-phenoxy-biphenyl-4-yl)propionic acid methyl ester hydrochloride salt and 2-amino-5-chlorobenzoic acid by general procedure A] in CH2Cl2 was treated with (0.035 g, 0.1 mmol) of bansyl chloride according to the general procedure F. Product was purified by flash column chromatography on silicagel using ethyl acetate hexanes to give product as pale yellow solid (0.06 g, 74.0% yield).

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