Hexane → (3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methyl-4-[9-(4,4,5,5,5-pentafluoropentylaminosulfonyl)nonyl]chroman

7-Methoxymethoxy-3-(4-methoxymethoxyphenyl)-3-methyl-4-[9-(4,4,5,5,5-pentafluoropentylaminosulfonyl)nonyl]chroman (8.0 mg, 0.0113 mmol) was dissolved in a solvent mixture of THF (0.2 ml) and isopropanol (0.2 ml), 5N-HCl aqueous solution (0.6 ml) was added dropwise thereto, and the mixture was stirred at room temperature for 3 days. After the reaction was completed, the mixture was cooled, and then saturated aqueous NaHCO3 solution was added thereto. The resulting mixture was extracted with chloroform and washed with saturated saline solution. The organic layer was dried over magnesium sulfate and concentrated under reduced pressure. The residue thus obtained was subjected to silica gel column chromatography (n-hexane:ethyl acetate=1:1) to give (3RS,4RS)-7-hydroxy-3-(4-hydroxyphenyl)-3-methyl-4-[9-(4,4,5,5,5-pentafluoropentylaminosulfonyl)nonyl]chroman (0.78 mg, yield 11%).

1. additionwas added dropwise
2. temperaturethe mixture was cooled
3. extractionThe resulting mixture was extracted with chloroform
4. washwashed with saturated saline solution
5. dry with materialThe organic layer was dried over magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe residue thus obtained

ORD-Eintrag

ord-fae7bc854963435c88c7067942589ab2

Quelldatensatz

uspto-grants-2006_07

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US07074819B2