Sodium Sulfide → HCID 53241771, compound

Participants

Reaction Steps

Sodium sulfide (0.14 g, 1.17 mmol) was added to a solution of (1R,10R,11S,16S)-5-methoxy-1,3,11,15,15-pentamethyl-8-oxatetracyclo[8.8.0.02,7.011,16]octadeca-2,4,6-triene (Compound No. 5) (0.08 g, 0.2 mmol) in anhydrous NMP (1.6 mL) in a microwave vessel. The reaction vessel was sealed and placed in a CEM-Discovery reactor and irradiated at 180° C. for 20 min. The reaction mixture was allowed to cool to room temperature and then quenched with 2 M HCl and ethyl acetate. The organic layer was separated, washed with water and concentrated to dryness. The crude product was purified by flash chromatography (Hexanes/EtOAc, 9:1) to yield (1R,10R,11S,16S)-1,3,11,15,15-pentamethyl-8-oxatetracyclo[8.8.0.02,7.011,16]octadeca-2,4,6-trien-5-ol (Compound No. 6) (0.022 g, 29% yield) as a white solid. 1H NMR (CDCl3): δ 6.08 (m, 2H), 4.43 (s, 1H), 4.30 (m, 1H), 4.08 (m, 1H), 2.80 (m, 1H), 2.40 (s, 3H), 1.40-1.78 (m, 8H), 1.36 (s, 3H), 0.98-1.28 (m, 3H), 0.92 (s, 3H), 0.88 (s, 3H), 0.84 (s, 3H). MS m/z 329 (C22H32O2+H+).

Provenance & Evidence