Citric Acid → HCID 178460516, compound

Participants

Reaction Steps

Potassium trimethylsilanolate (65 mg, 0.51 mmol) was added in one portion to a solution of trans-ethyl 2-(4-{4-[({5-[(4-cyanophenyl)amino]-1,3,4-oxadiazol-2-yl}carbonyl)amino]-phenyl}cyclohexyl)propanoate (Example 583, 25 mg, 0.051 mmol) in THF (2 mL) and the reaction mixture was stirred at room temperature for 48 h. A 1M aqueous solution of citric acid (10 mL) was added and the mixture was filtered to leave a solid. The solid was washed with H2O (2 mL) and purified by reverse phase preparative HPLC, eluting with a gradient of CH3CN and H2O containing 0.2% TFA, to give the title compound (11 mg, 47%) as a solid; 1H NMR δ 1.05 (3H, t), 1.1-1.3 (2H, m), 1.38-1.51 (2H, m), 1.52-1.63 (1H, m), 1.7-1.9 (4H, m), 2.13-2.25 (1H, m), 2.4-2.5 (1H, m), 7.22 (2H, d), 7.7 (2H, d), 7.76 (2H, d), 7.85 (2H, d), 11.0 (1H, s); MS m/e MH+ 460.

Provenance & Evidence