(3R,4S)-4-[benzyl(tert-butoxycarbonyl)amino]pent-1-en-3-ol

(5S,6S)-1-benzyl-5-diphenylphosphoryloxy-4-iodo-6-methyl-5,6-dihydro-1H-pyridin-2-one

(-)-(5R,6S)-1-benzyl-5-hydroxy-6-methyl-5,6-dihydropyridin-2(1H)-one

(5R,6S)-1-benzyl-5,6-dihydro-6-methyl-5-diphenylphosphoryloxy-1H-pyridine-2-one

(5S,6S)-1-benzyl-5-(tert-butyldimethylsilanyloxy)-6-methyl-4-trifluoromethanesulfonyloxy-5,6-dihydro-1H-pyridin-2-one