(2S-trans)-[1-[[2-[[[1,4-dihydro-4-oxo-5-(phenylmethoxy)-2-pyridinyl]carbonyl]amino]ethoxy]hydroxyphosphinyl]-2-methyl-4-oxo-3-azetidinyl]carbamic acid, phenylmethyl ester, monosodium salt 在
palladium on charcoal
对甲苯磺酸 作用下,
以
N-甲基乙酰胺 为溶剂,
生成 (2S-trans)-(3-Amino-2-methyl-4-oxo-1-azetidinyl)phosphonic acid, 2-[[(1,4-dihydro-5-hydroxy-4-oxo-2-pyridinyl)carbonyl]amino]ethyl ester, p-toluenesulfonic acid salt