Benzoic acid, 4-(allyloxy)-3,5-dichloro- → 1-[2-(4-Allyloxy-3,5-dichloro-benzoylamino)-propionyl]-pyrrolidine-2-carboxylic acid (2-ethoxy-5-oxo-tetrahydro-furan-3-yl)-amide

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Prepared from 109 and 4-allyloxy-3,5-dichloro-benzoic acid following the method used in the synthesis of 82 to give the title compound as a white solid (228 mg, 65%). 1H-NMR (500 MHz, CD3OD) δ 1.10-1.30 (m, 4H), 1.32-1.52 (m, 3H), 1.63-2.31 (m, 4H), 2.41-2.50 (d, 0.5H), 2.52-2.61 (dd, 0.5H), 2.67-2.81 (m, 0.5H), 2.94-3.05 (dd, 0.5H), 3.47-3.96 (m, 4H), 4.21-4.81 (m, 5H), 5.22-5.32 (m, 1H), 5.35-5.49 (m, 1.5H), 5.55-5.63 (m, 0.5H), 6.06-6.21 (m, 1H), 7.90 (s, 2H). Analytical HPLC (mixture of 2 diastereomers) 12.56 min. LC-MS (ES+) m/e=542.3(MH+)

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