Diisopropylethylamine → HCID 69609940, compound

Participants

Reaction Steps

A solution of 5-chloro-2-(3,5-dimethyl-piperidin-1-yl)-benzoic acid (0.250 g, 0.933 mmol) in DMF (4.0 mL) was reacted with (2S)-amino-3-(2′-phenoxy-biphenyl-4-yl)-propionic acid methyl ester hydrochloride (0.360 g, 0.933 mmol), HBTU (0.355 g, 0.933 mmol), and DIEA (0.500 mL, 2.800 mmol) by the general procedure A. The crude product was purified by flash column chromatography on silica gel using DCM (+20% hexane) to give 0.435 g (62%) of 2-[5-Chloro-2-(3,5-dimethyl-piperidin-1-yl)-benzoylamino]-3-(2′-phenoxy-biphenyl-4-yl)-propionic acid methyl ester. A solution of this ester (0.200 g, 0.334 mmol) in THF (4.0 mL) was reacted with LiOH (0.050 g, 1.172 mmol) by the general procedure I to give 0.182 g (93%) of 2-[5-Chloro-2-(3,5-dimethyl-piperidin-1-yl)-benzoylamino]-3-(2′-phenoxy-biphenyl-4-yl)-propionic acid as a white solid. LCMS: 584 (M+1)+. 1H NMR (CDCl3) 11.20 [d, 1H], 8.21 [d, 1H], 7.45 [m, 2H], 7.39 [m, 2H], 7.23 [m, 8H], 7.02 [m, 2H], 6.86 [m, 2H], 4.90 [m, 1H], 3.38 [dd, 5.60 Hz, 1H], 3.26 [dd, 1H], 2.80 [m, 2H], 2.16 [t, 1H], 2.04 [t, 1H], 1.70 [m, 2H], 1.43 [m, 1H], 0.76 [m, 6H], 0.58 [m, 1H].

Provenance & Evidence