(2R,5S)-2-(tert-Butyl)-5-methyl-5-(2'-nitroethyl)-1,3-dioxolan-4-on

methyl 5,6-O-cyclohexylidene-3-deoxy-2-C-methyl-α-D-ribo-hexofuranoside

1-benzyl hydrogen 2-hydroxy-2-methylbutanedioate

(4S)-(+)-4-methylmuconolactone

S-(+)-Methyl-γ-iodo-β-carbomethoxy-β-hydroxy-butyrat