6-[1-[tert-Butyl(dimethyl)silyl]oxyethyl]-7-oxo-3-(3-oxolanyl)-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid prop-2-enyl ester

(5r,6s)-allyl 6-((r)-1-((tert-butyldimethylsilyl)oxy)ethyl)-7-oxo-3-((r)-tetrahydrofuran-2-yl)-4- ; faropenem related compound 3 ; all(1'r,2"r,5r,6s)-6(1'-tert-butyl dimethylsilyloxyethy)-2-(2"-tetrahydrofuranyl)penem-3-carboxylate ; (5r,6s)-6-(1r)-1-(1,1-dimethylethyl)dimethylsilyloxyethyl-7-oxo-3-(2r)-tetrahydro-2-furanyl-4-thia-1-azabicyclo3.2.0hept-2-ene-2-carboxylic acid 2-propenyl ester ; (5r,6s)-6-[(1r)-1-[[(1,1-dimethylethyl)dimethylsilyl]oxy]ethyl]-7-oxo-3-[(2r)-tetrahydro-2-furanyl]-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid 2-propenyl ester