Sodium Sulfite → HCID 68706209, compound

Participants

Reaction Steps

To a solution of enantiomer A of 4-(4-hydroxy-phenyl)-1,3a,4,9b-tetrahydro-3H-5-oxa-2-thia-cyclopenta[a]naphthalen-8-ol 11d (20 mg, 0.066 mmol) in MeOH/H2O (1:1, 3 mL) add oxone (40 mg, 0.066 mmol). Stir the reaction at room temperature for 30 minutes. Add 1.0 M Na2SO3 and stir the reaction for 5 minutes. Dilute with EtOAc and wash with saturated sodium bicarbonate. Extract aqueous layer with EtOAc (2×). Combine organic extracts, dry (Na2SO4), filter and concentrate to afford 4-(4-hydroxy-phenyl)-2-oxo-1,2,3,3a,4,9b-hexahydro-5-oxa-2λ4-thia-cyclopenta[a]naphthalen-8-ol 13 (17 mg, 0.054 mmol, 85%). 1H NMR (δ, 400 MHz, MeOD) 7.44 (d, 2H, J=8.8 Hz), 6.85 (d, 2H, J=8.8 Hz), 6.75 (d, 1H, J=8.8 Hz), 6.70 (d, 1H, J=2.8 Hz), 6.61 (dd, 1H, J=8.8, 2.8 Hz), 5.19 (s, 1H), 4.19 (dd, 1H, J=6.2, 6.2 Hz), 3.76 (d, 1H, J=7.9 Hz), 3.06-2.94 (m, 1H), 2.84 (dd, 1H, J=14.1, 5.3 Hz), 2.62 (dd, 1H, J=13.0, 5.5 Hz), 2.29 (dt, 1H, J=5.2, 14.0 Hz). HPLC (Zorbax C18 column; 10 to 100% CH3CN/H2O for 10 min then 100% CH3CN for 5 min; 1 mL/min; tr 7.17 min). LRMS calcd for C17H15O4S: 315.1; found (ES−, M−H): 315.2.

Provenance & Evidence