Sodium hydride → (3R)-3-[2-[(tert-butyldimethylsilyl)oxy]ethyl]-12-[[4-(morpholin-4-yl)cyclohexyl]oxy]-7-thia-9,11-diazatricyclo[6.4.0.0[2,6]]dodeca-1(8),2(6),9,11-tetraene

Participants

Reaction Steps

For the preparation of the starting material compound 25.1, see Example 25. Sodium hydride (60% dispersion in mineral oil, 130 mg, 3.25 mmol, 4.00 equiv) was treated with trans-4-(morpholin-4-yl)cyclohexan-1-ol (192 mg, 1.04 mmol, 1.27 equiv) in freshly distilled THF (15 mL) at 0° C. under nitrogen. After stirring for 30 min at room temperature, then (3R)-3-[2-[(tert-butyldimethylsilyl)oxy]ethyl]-12-chloro-7-thia-9,11-diazatricyclo[6.4.0.0[2,6]]dodeca-1(12),2(6),8,10-tetraene (300 mg, 0.81 mmol, 1.00 equiv) was added and the resulting solution was allowed to react, with stirring, for an additional 2 hr at room temperature. The reaction was then quenched with saturated aqueous NH4Cl, extracted with 3×20 mL of ethyl acetate. The combined organic layers were washed with brine, dried over sodium sulfate and concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:8) to provide (3R)-3-[2-[(tert-butyldimethylsilyl)oxy]ethyl]-12-[[4-(morpholin-4-yl)cyclohexyl]oxy]-7-thia-9,11-diazatricyclo[6.4.0.0[2,6]]dodeca-1(12),2(6),8,10-tetraene (378 mg, 90%) as a yellow oil. MS (ES): m/z 518 [M+H]+.

Provenance & Evidence