[[(2S,3R)-3-hydroxy-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]oxymethanesulfonate;tetrabutylazanium 在
Dowex 50WX
4 Na form ion exchange resin 作用下,
以
水 为溶剂,
以6.93 g的产率得到sodium;[[(2S,3R)-3-hydroxy-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoyl]amino]oxymethanesulfonate