pseudo-N-(2,3:5,6-di-O-isopropylidene-α-D-mannofuranosyl)(2-benzyloxyethan)imine N-oxide 、
亚磷酸二甲酯 在
lithium tert-butoxide 作用下,
生成 (1R)-pseudo-dimethyl (2-benzyloxy)<1-(2,3:5,6-di-O-isopropylidene-α-D-mannofuranosyl)hydroxyamino>ethylphosphonate 、 (1S)-pseudo-dimethyl (2-benzyloxy)<1-(2,3:5,6-di-O-isopropylidene-α-D-mannofuranosyl)hydroxyamino>ethylphosphonate