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

5-(tert-butyldiphenylsilyloxymethyl)-8-ethylhexahydroindolizin-3-one

phenylmethyl 6-(tert-butyldiphenylsilyloxymethyl)-2-hydroxymethyl-3-vinylpiperidine-1-carboxylate

8-ethyl-5-hydroxymethylhexahydroindolizin-3-one

1-phenylmethyl 2-methyl 6-(tert-butyldiphenylsilyloxymethyl)-5,6-dihydro-4H-pyridine-1,2-dicarboxylate