1-deoxy-1-[(diethylphosphonomethyl)(2-ethoxy-2-oxoethyl)amino]-2,3-O-isopropylidene-4,5-di-O-acetate-6-[(tert-butyl)dimethylsilyl]-D-mannitol

1-deoxy-1-[(diethylphosphonomethyl)(2-ethoxy-2-oxoethyl)amino]-2,3:5,6-di-O-isopropylidene-D-mannitol

1-deoxy-1-[(2-ethoxy-2-oxoethyl)amino]-2,3:5,6-di-O-isopropylidene-D-mannitol

[[(4R,5R)-5-((1R,2R)-1,2-Diacetoxy-3-hydroxy-propyl)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl]-(diethoxy-phosphorylmethyl)-amino]-acetic acid ethyl ester

1-deoxy-1-[(diethylphosphonomethyl)(2-ethoxy-2-oxoethyl)amino]-2,3-O-isopropylidene-4,5-di-O-acetate-6-(diphenylphosphoryl)-D-mannitol