(R)-2-Methoxycarbonylmethyl-2-methyl-1-thiosuccinimide

{[5-tert-Butoxycarbonyl-4-(2-methoxycarbonyl-ethyl)-3-methyl-1H-pyrrol-2-yl]-cyano-methyl}-triphenyl-phosphonium

methyl 5-methyl-4,6-dioxoheptanoate

5-acetoxymethyl-3-(2-methoxycarbonyl-ethyl)-4-methyl-pyrrole-2-carboxylic acid tert-butyl ester

tert-Butyl 3-(2-methoxycarbonylethyl)-4,5-dimethylpyrrole-2-carboxylate