Iodomethyl pivalate → HCID 131722928, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 40 mg of sodium (1S,5R,6S)-6-((1R)-1-hydroxyethyl)-2-(7-methoxymethylimidazo[5,1-b]thiazol-2-yl)-1-methyl-1-carbapen-2-em-3-carboxylate in 0.6 ml of DMF was added 4.2 mg of sodium hydrogen carbonate, and the mixture was cooled to −30° C. under the atmosphere of argon. Pivaloyloxymethyl iodide (34 mg) was added, and the mixture was stirred for 1 hour, diluted with 30 ml of ethyl acetate, and washed with 20 ml of saturated aqueous saline and 20 ml of semi-saturated squeous saline. The organic layer was dried over anhydrous magnesium sulfate, and concentrated under reduced pressure to a volume of about 1 ml. The concentrate was purified by column chromatography on silica gel (chloroform:methanol=95:5) to give the title compound was obtained in a yield of 18.4 mg.

Provenance & Evidence