New aziridine derivatives and their preparation methods

摘要

The present invention relates to new aziridine derivative that is represented by following general chemical formulae (la) or (lb), and to their preparation method. In the above mentioned chemical formulae, R₂ and R₃ can be same or different, and they are hydrogen, low-quality alkyl or cycloalkyl respectively; R₄ can be selected among hydrogen, alkyl, aril, or amino protective group, and amino protective group is, for example, (PH)₃C, FMOC (9-fluorenylmethyl oxycarbonyl), alkoxycarbonyl, ariloxycarbonyl, aralkyloxycarbonyl and R₅CO, R₅SO₂ where R₅ is alkyl or aril or aralkyl.