(+)-(S)-N-[(1E)-5-chloropentylidene]-2-methylpropane-2-sulfinamide

5-chloro-pentanoic acid phenyl ester

(S)-5-Methanesulfonyloxy-2-(S)-piperidin-2-yl-pentanoic acid methyl ester

(S)-2-((S)-4-Methanesulfonyloxy-1-methoxycarbonyl-butyl)-piperidine-1-carboxylic acid tert-butyl ester

(2S,2'S)-methyl 2-(N-tert-butoxycarbonylpiperidin-2'-yl)pent-4-enoate