Triphenylphosphine → 4-((1R,2S)-2-{2-[4-(2-azetidin-1-yl-2-oxoethyl)-2-fluorophenoxy]ethyl}cyclopropyl)-1-(3-isopropyl-1,2,4-oxadiazol-5-yl)piperidine

Participants

Reaction Steps

To a solution of 1-(azetidin-1-yl)-2-(3-fluoro-4-hydroxyphenyl)ethanone (65.0 mg, 0.236 mmol) in 5 ml anhydrous dichloromethane at RT was added a solution of 2-{(1S,2R)-2-[1-(3-isopropyl-1,2,4-oxadiazol-5-yl)piperidin-4-yl]cyclopropyl}ethanol (59.0 mg, 0.283 mmol), triphenylphosphine, polymer-bound (186 mg, 0.534 mmol), and di-tert-butyl azodicarboxylate (109 mg, 0.472 mmol). The reaction mixture as stirred at RT for 3 hours. The mixture was filtered by Celite and concentrated. The residue The reaction mixture was filtered and purified by reverse-phase HPLC (SunFire Prep C18 OBD 5 um 19×100 mm column; 35-100% acetonitrile in 0.1% formic acid in water gradient), to give the title compound. LC/MS (m/z) 471.3 (M+H)+. Human EC50: 5.3 nM

Provenance & Evidence