反应详情

温度

70 °C

To a solution of 17-ethyl-1-hydroxy-14-(tert-butyldimethylsiloxy)-12-[2'-(4"-(2'"-methanesulfonyloxyethyloxy)-3"-methoxycyclohexyl)-1'-methylvinyl]-23,25-dimethoxy-13,1 9,21,27-tetramethyl-11,28-dioxa-4-azatricyclo[22.3.1.04,9 ]octacos-18-ene-2,3,10,16-tetraone (26.5 mg) in dry tetrahydofuran (0.3 mL) was added 200 μL of a sodium morpholine solution (prepared by addition of 10 μL morpholine to a suspension of 2.3 mg sodium hydride in 0.5 mL of tetrahydrofuran) and the mixture heated to 70° C. After 6 hours, the mixture is cooled to room temperature and quenched by the addition of saturated ammonium chloride solution, extracted with ethyl acetate, and the organic portion dried over magnesium sulfate. Purification of the concentrate by flash chromatography on silica gel (ethyl acetate:hexane (2:1)+1% methanol, then 2% ammonium hydroxide, 5% methanol, in methylene chloride) gave the title compound (10 mg). 1H NMR consistent with the desired structure.

1. temperaturethe mixture is cooled to room temperature
2. customquenched by the addition of saturated ammonium chloride solution
3. extractionextracted with ethyl acetate
4. dry with materialthe organic portion dried over magnesium sulfate
5. customPurification of the
6. concentrationconcentrate by flash chromatography on silica gel (ethyl acetate:hexane (2:1)+1% methanol