(R)-(-)-1-(benzyloxycarbonyl)-1,2,3,4-tetrahydro-2-propylpyridine

(-)-2-cyano-6-oxazolopiperidine

(S,Z)-benzyl 2-(prop-1-en-1-yl)piperidine-1-carboxylate

2R-(+)-4,5-didehydro-N-[(R)-α-methylbenzyl]-2-propyl-piperidine

(2S,3R,5S,8aR)-3-methyl-2-phenyl-5-propylhexahydro-5H-oxazolo[3,2-a]pyridine-5-carbonitrile