Triethylamine → (3R,3aR,6R,6aR)-6-hydroxyhexahydrofuro[3,2-b]furan-3-yl 4-(nitrooxy)piperidine-1-carboxylate

To a solution of piperidin-4-yl nitrate hydrochloride (0.620 g, 3.40 mmol), triethylamine (0.567 mL, 4.07 mmol) and 4-dimethylaminopyridine (0.083 g, 0.680 mmol) in DCM (23 mL), (3R,3aR,6R,6aR)-6-hydroxyhexahydrofuro[3,2-b]furan-3-yl 4-nitrophenyl carbonate (1.06 g, 3.40 mmol) was added; the mixture was stirred at room temperature for 18 hrs. Then the mixture was diluted with DCM and washed with a 5% solution of sodium dihydrogen phosphate (2×30 mL) and brine (1×30 mL). The organic layer was dried over sodium sulfate, filtered, concentrated and purified by flash chromatography (Biotage SP1, EtOAc/n-hexane from 30 to 100%), affording the title compound as a yellow oil.

1. washwashed with a 5% solution of sodium dihydrogen phosphate (2×30 mL) and brine (1×30 mL)
2. dry with materialThe organic layer was dried over sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated
5. custompurified by flash chromatography (Biotage SP1, EtOAc/n-hexane from 30 to 100%)

ORDレコード

ord-e73b49a4366545b5b75f738fb840275e

出典データセット

uspto-grants-2012_02

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08119806B2