syn 3-benzoyl-oxy-4-phenyl-4-(3-tosylureido)-1-buten

(S)-1-(tert-butoxycarbonyl)-2-phenyl-3-piperidone oxime

tert-butyl (S)-3-(acetoxyimino)-2-phenylpiperidine-1-carboxylate

(S)-3-[(E)-Methoxyimino]-2-phenyl-piperidine-1-carboxylic acid tert-butyl ester

tert-butyl (2S,3S)-3-((tert-butoxycarbonyl)amino)-2-phenylpiperidine-1-carboxylate