Pivalaldehyde → HCID 11526594, compound

Participants

Reaction Steps

Azetidine-1-carboxylic acid (1S,2S)-(2-{[(1-aminomethyl-2-hydroxy-pentylcarbamoyl)-methyl]-carbamoyl}-4-trifluoromethyl-phenyl)-amide (165 mg, 0.35 mmol, see procedure 1b) was dissolved in dichloroethane (4 mL). The resultant solution was charged sequentially with trimethylacetaldehyde (20.5 mg, 0.2 mmol) and sodium triacetoxyborohydride (148 mg, 0.7 mmol), stirred for 3 h at RT, quenched with sat. NaHCO3, and extracted twice with EtOAc. The organic extracts were combined, washed with brine, dried (Na2SO4), filtered, and concentrated in vacuo. The residue was purified by reverse-phase HPLC to afford the title compound (55 mg) as a white powder after lypholization. MS found: (M+H)+=530.5.

Provenance & Evidence