(S)-2-Methoxycarbonylmethyl-2-methyldithiosuccinimide

5-Cyanomethyl-3-(2-methoxycarbonyl-ethyl)-4-methyl-1H-pyrrole-2-carboxylic acid tert-butyl ester

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