Methyl 3-aminopropanoate hydrochloride → (+/-)-3-({5-[1-(4'-Tert-butyl-2,6-dimethyl-biphenyl-4-yloxymethyl)-propyl]-thiophene-2-carbonyl}-amino)-propionic acid methyl ester

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This compound is made by the general method as exemplified in Preparation 94 using 4′-tert-butyl-2,6-dimethyl-biphenyl-4-ol and 5-(1-hydroxymethyl-propyl)-thiophene-2-carboxylic acid methyl ester in Step A and 3-amino-propionic acid methyl ester hydrochloride salt in Step C as the starting materials to provide (±)-3-({5-[1-(4′-tert-butyl-2,6-dimethyl-biphenyl-4-yloxymethyl)-propyl]-thiophene-2-carbonyl}-amino)-propionic acid methyl ester (0.213 g) as a white solid. MS (ES): 520.3 [M−H]−. The racemic material is separated by chiral HPLC (column: Chiralpak AD-H 4.6×150 mm; eluent: 20:80 IPA/supercritical CO2; flow rate: 5 mL/min; UV absorbance wavelength: 270 nm) to provide Isomer 1 (0.074 g, >99% ee) and Isomer 2 (0.078 g, >99% ee).

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