(2S,6)-(-)-2-(5,5-dimethoxypent-2-yl)-1-<(1R)-1-(2,6-dichlorophenyl)ethyl>pyrrolidine

1-phenylmethyl 2-methyl 6-(tert-butyldiphenylsilyloxymethyl)-3-methylpiperidine-1,2-dicarboxylate

phenylmethyl 2-(tert-butyldiphenylsilyloxymethyl)-6-trifluoromethanesulfonyloxy-3,4-dihydro-2H-pyridine-1-carboxylate

phenylmethyl 6-(tert-butyldiphenylsilyloxymethyl)-2-(2-ethoxycarbonylvinyl)-3-methylpiperidine-1-carboxylate

(2S,3S,6R)-6-(4-Benzyloxy-butyl)-2-(3-chloro-propyl)-3-methyl-4-oxo-piperidine-1-carboxylic acid benzyl ester