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(2010/02/12)
3-(azido-oxazol-2-yl-methyl)-pyrrolidine-1-carboxylic acid benzyl ester
3-(methanesulfonyloxy-oxazol-2-yl-methyl)-pyrrolidine-1-carboxylic acid benzyl ester
3-(hydroxy-oxazol-2-yl-methyl)-pyrrolidine-1-carboxylic acid benzyl ester
benzyl 3-formylpyrrolidine-1-carboxylate