Cyclopentane, methylene- → N-cyclohexyl-1-ethyl-5-(1-oxa-2-azaspiro[4.4]non-2-en-3-yl)-1H-pyrazolo[3,4-b]pyridin-4-amine

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반응 단계

Methylene cyclopentane (0.073 ml, 0.0006 mole) was added to 4-(cyclohexylamino)-1-ethyl-1H-pyrazolo[3,4-b]pyridine-5-carbaldehyde oxime (0.1 gm, 0.0003 mole) (example 8) in tetrahydrofuran. The reaction mixture was stirred at room temperature for about 5 minutes. Sodium hypochlorite (5 ml) was added slowly to the reaction mixture over a period of about 5 minutes and the mixture was allowed to stir at room temperature for about 5 h. The organic solvent was evaporated and the residue was extracted in ethyl acetate. The organic layer was concentrated and the title compound obtained was purified by preparative thin layer chromatography.

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