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(2007/10/02)N-benzoyloxycarbonyl D-glutamic acid α-t-benzyl ester
(R)-5-Oxo-pyrrolidine-1,2-dicarboxylic acid 1-benzyl ester 2-tert-butyl ester
2-Benzyloxycarbonylamino-5-hydroxy-pentanoic acid tert-butyl ester
2-Benzyloxycarbonylamino-pentanedioic acid
tert-butyl ester of α-N-carbobenzoxy-δ-acetoxy-D-norvaline