2,4-Dimethylbenzaldehyde → HCID 11454345, compound

Participants

Reaction Steps

A solution of {(25, 3S)-2-[2-(5-tert-butyl-[1,3,4]thiadiazol-2-ylcarbamoyl)-acetylamino]-3-hydroxy-hex-4-ynyl}-carbamic acid benzyl ester (90 mg, 0.19 mmol) in MeOH (4 mL) was charged with 5% Pd/C, Degussa style (18 mg), stirred under H2 (1 atm) for 12 h at RT, filtered, and concentrated in vacuo. The residue was dissolved in MeOH (3 mL). The resultant solution was charged sequentially with 2,4-dimethylbenzaldehyde (0.02 mL, 0.14 mmol) and sodium cyanoborohydride (11 mg, 0.18 mmol), stirred for 12 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. Purification of the residue by reverse-phase HPLC provided the title compound as a white powder after lyopholization. MS found: (M+H)+=476.5.

Provenance & Evidence