p. 377 - 380
(2007/10/02)p. 6127 - 6134
(2007/10/02)(2R,3S)-2-Dibenzylamino-3-methyl-pentanedioic acid di-tert-butyl ester
(2S,3R)-2-Dibenzylamino-3-methyl-pentanedioic acid
acetylamino-(1-methyl-3-oxo-propyl)-malonic acid diethyl ester
2-Acetylamino-2-ethoxycarbonyl-3-methyl-pentanedioic acid 1-ethyl ester
2,2-diethyl 3-methyl-5-oxopyrrolidine-2,2-dicarboxylate