(S)-methyl 2-(2-aminoacetamido)-6-(benzyloxycarbonylamino)hexanoate 在
乙醇 作用下,
以
甲醇 、
氨 为溶剂,
反应 72.0h,
以to give the title compound as colourless needles (1 g.) m.p. 210°C. (Found: C, 59.9; H, 6.7; N, 13.5. C16H21N3O4 requires: C, 60.1; H, 6.5; N, 13.2%)的产率得到[4-(3,6-dioxo-piperazin-2-yl)-butyl]-carbamic acid benzyl ester