Dimethyl Sulfide → HCID 117974993, compound

Participants

Reaction Steps

A mixture of tert-butyl((3S,7R,8R,9S)-8-(allyloxy)-7-(4-fluorobenzyl)-9-methyl-2-oxooxonan-3-yl)(methoxymethyl)carbamate (480 mg, 1.001 mmol), NaHCO3 (8.41 mg, 0.10 mmol) and anhydrous MeOH (0.31 mL) in anhydrous CH2Cl2 (9.7 mL) was treated with ozone at −78° C. until the solution became light blue in color. The mixture was purged with nitrogen until colorless and then quenched by addition of dimethyl sulfide (0.148 mL, 2.00 mmol). The reaction mixture was warmed to room temperature and stirred for 20 h, concentrated, and purified by column chromatography on SiO2 (gradient, hexanes/EtOAc) to provide the title compound as a mixture of rotamers in the form of a white solid (461 mg, 96%): mp 51-53° C.; IR (neat) 2935, 1740, 1701, 1509, 1367, 1297, 1173, 1081 cm−1; 1H NMR (400 MHz, CDCl3) δ 9.68 (s, 1H), 7.17-7.06 (m, 2H), 7.00-6.91 (m, 2H), 4.99-4.16 (m, 6H), 3.87-2.97 (m, 4H), 2.46-2.27 (m, 1H), 2.17-2.01 (m, 1H), 1.97-1.75 (m, 1H), 1.74-1.37 (m, 17H), 0.95-0.78 (m, 1H); HRMS-ESI (m/z) ([M]+) calcd for C25H36FNO7, 481.2476; found, 481.2481.

Provenance & Evidence