p. 4299 - 4308
(2007/10/03)methyl 2-(bromomethyl)propenoate
(6R,7R)-benzhydryl 3-hydroxy-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
(2R,3R,6R,7R)-3-Acetoxy-3-(2-methoxycarbonyl-allyl)-5,8-dioxo-7-phenylacetylamino-5λ4-thia-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid benzhydryl ester
(2R,3R,6R,7R)-3-Acetoxy-3-(2-methoxycarbonyl-allyl)-8-oxo-7-phenylacetylamino-5-thia-1-aza-bicyclo[4.2.0]octane-2-carboxylic acid benzhydryl ester