【序号】: 1 【作者】: Fredrik Degerbeck, Bengt Fransson, Leif Grehn and Ulf Ragnarsson 【题名】: Synthesis of 15N-labelled chiral Boc-amino acids from triflates: enantiomers of leucine and phenylalanine 【期刊】: J. Chem. Soc., Perkin Trans 1, 【年、卷、期、起止页码】: 1993, 11-14