4-(4-Cyclohept-1-en-1-ylphenyl)-N-[(1-methoxypentyl)oxy]-2-methyl-2-(methylsulfonyl)butanamide (205 mg, 0.36 mmol) was dissolved in methylene chloride (4 mL) at ambient temperature. To this solution was added HCl (4M in 1,4-dioxane, 1.82 mL, 7.30 mmol) and the solution was stirred at rt for 20 minutes. Methanol (500 uL) was added followed by silica gel and the mixture was concentrated to dryness. The crude material was purified via silica gel chromatography eluting with methylene chloride/methanol to afford 4-(4-cyclohept-1-en-1-ylphenyl)-N-hydroxy-2-methyl-2-(methylsulfonyl)butanamide as a solid. 91.5 mg. LCMS: (M+1) 366.2.
