Aldoxime → HCID 69828738, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (3aS,4S,6R,6aR)-6-(6-cyclopentylamino-purin-9-yl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxole-4-carboxylic acid (0.2 g), 2-ethoxy-1-ethoxycarbonyl-1,2-dihydroquinoline (146 mg), acetaldoxime (76 mg) and dimethoxyethane (DME, 25 ml) was heated under reflux for 4 days and then cooled to 22° C. The mixture was concentrated in vacuo and ethyl acetate (40 ml) added to the residue. The resulting suspension was washed with 0.5M citric acid solution (3×20 ml) and the aqueous washings were extracted with ethyl acetate (2×20 ml). The combined organic extracts were washed with water (20 ml) and brine (30 ml) and dried (MgSO4). After concentration in vacuo the residue was purified by chromatography on silica gel, eluting with ethyl acetate:cyclohexane (1:1), to give the title compound (63 mg).

Provenance & Evidence