N-<2-(trimethylsilyl)ethoxycarbonyl>hydroxylamine

2-(trimethylsilyl)ethyl <(2,4,6-trideoxy-3-O-(triethylsilyl)-4-thio-β-D-ribo-hexopyranosyl)oxy>carbamate

phenyl 2,3,6-trideoxy-1-thio-α-D-threo-hex-2-enopyranoside