HCID 59389278, compound → HCID 59389404, compound

Participants

Reaction Steps

A 0.90 mol/L methyl magnesium bromide-tetrahydrofuran solution (0.878 mL) was added dropwise to a solution of the compound of Example 237 (90.6 mg) in THF (15 mL) at −78° C. in an argon atmosphere. The mixture was allowed to gradually warm to room temperature. The reaction was quenched by adding a saturated aqueous solution of ammonium chloride and the mixture was extracted with THF (100 mL). The extract was washed with water and saturated brine and dried over anhydrous sodium sulfate. The dried extract was concentrated and purified by recrystallization (methanol-ethyl acetate-hexane) to afford the title compound as a pale yellow powder (38.0 mg).

Provenance & Evidence