Water → HCID 68457984, compound

Participants

Reaction Conditions

Reaction Steps

1.04 g of 3-(5-[4-(cyclopentyloxy)-2-hydroxybenzoyl]-2-{[3-(methoxymethoxy)-1,2-benzisoxazol-6-yl]methoxy}phenyl) propanoic acid and 512 mg of potassium carbonate were suspended in 10 mL of N,N-dimethylformamide, to which 0.29 mL of chloromethyl pivalate was added, and this mixture was stirred for 2 hours at 40° C. Then, water and ethyl acetate were added to the reaction mixture, and the organic phase was separated therefrom. The remaining aqueous phase was extracted with ethyl acetate, and organic phases were combined together. After the resultant organic phase was washed with a saturated sodium chloride solution, the washed phase was dried over anhydrous magnesium sulfate, and the solvent was distilled out under reduced pressure. The resultant residue was purified by silica gel column chromatography [eluent; hexane:ethyl acetate=3:1] to yield 1.02 g of {[3-(5-[4-(cyclopentyloxy)-2-hydroxybenzoyl]-2-{[3-(methoxymethoxy)-1,2-benzisoxazol-6-yl]methoxy}phenyl) propanoyl]oxy}methyl pivalate as light yellow oil.

Provenance & Evidence