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(1972)diethyl N-benzyloxycarbonyl-(S)-aspartate
L-aspartic acid diethyl ester
(S)-2-benzyloxycarbonylamino-4-tert-butyldimethylsilyloxybutanpyrrolidinamide
(S)-2-benzyloxycarbonylamino-4-tert-butyldimethylsilyloxy-1-phenylbutan-1-one
benzyl (3S)-2-oxotetrahydro-3-furanylcarbamate