反应详情

A solution of (3S,4R)-4-(1-(R)-t-butyldimethylsilyloxymethylethyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone (0.40 g) in methanol (40 ml) was treated with 6N hydrochloric acid (10 ml) with ice-cooling for 20 minutes. The reaction mixture was diluted with ethyl acetate (200 ml), washed with brine and dried over anhydrous sodium sulfate. Filtration and concentration of the filtrate in vacuo gave an oily residue, which was purified by silica gel chromatography to yield (3S,4R)- 4-(1-(R)-hydroxymethylethyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone.

1. temperaturecooling for 20 minutes
2. washwashed with brine
3. dry with materialdried over anhydrous sodium sulfate
4. filtrationFiltration and concentration of the filtrate in vacuo
5. customgave an oily residue, which
6. customwas purified by silica gel chromatography