反应详情

A solution of tert-butyl N-(4-hydroxycyclohexyl)carbamate (181 mg, 0.84 mmol, 1.40 equiv) in 8 mL of distilled THF was added sodium hydride (60% dispersion in mineral oil, 72 mg, 1.80 mmol, 3.00 equiv) at 0° C. and stirred for another 30 min under nitrogen. Then (12S)-12-[2-[(tert-butyldimethylsilyl)oxy]ethyl]-3-chloro-8-thia-4,6-diazatricyclo[7.4.0.0[2,7]]trideca-1(9),2(7),3,5-tetraene (230 mg, 0.60 mmol, 1.00 equiv) was added and stirred overnight at room temperature. The reaction was then quenched with saturated aqueous NH4Cl, extracted with 3×50 mL of ethyl acetate. The combined organic layers were washed with brine, dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:4) to give 240 mg (71%) of tert-butyl N-(4-[[(12S)-12-[2-[(tert-butyldimethylsilyl)oxy]ethyl]-8-thia-4,6-diazatricyclo[7.4.0.0[2,7]]trideca-1(9),2(7),3,5-tetraen-3-yl]oxy]cyclohexyl)carbamate as a yellow oil. MS: m/z 562 [M+H]+.

1. stirringstirred overnight at room temperature
2. customThe reaction was then quenched with saturated aqueous NH4Cl
3. extractionextracted with 3×50 mL of ethyl acetate
4. washThe combined organic layers were washed with brine
5. dry with materialdried over anhydrous sodium sulfate
6. concentrationconcentrated under vacuum