Trifluoroacetic acid → Benzyl 2-(4-((((2R,4S)-4-amino-2-hydroxy-2,6-dimethyl-3-oxoheptyl)oxy)sulfonyl)-3,5-dimethylphenoxy)acetate

Participants

Reaction Steps

Referring to FIG. 37, to a solution of benzyl 2-(4-((((2R,4S)-4-((tert-butoxycarbonyl)amino)-2-hydroxy-2,6-dimethyl-3-oxoheptyl)oxy)sulfonyl)-3,5-dimethylphenoxy)acetate (540 mg, 0.87 mmol) in DCM (15 mL) was added TFA (5 mL). The reaction mixture was stirred at room temperature for 3 h. Removal of the solvent under reduced pressure gave product, which was used directly in the next step without further purification. LC-MS analysis confirmed the structure.

Provenance & Evidence