methyl (S)-4-(dimethyl(phenyl)silyl)-6-(2-[1,3]dioxolan-2-ylethyl)-1-[(1S,5R)-5,8,8-trimethyl-2-oxo-3-oxabicyclo[3.2.1]oct-1-ylcarbonyl]-1,6-dihydropyridine-3-carboxylate
methyl (R)-4-(dimethyl(phenyl)silyl)-6-(2-[1,3]dioxolan-2-ylethyl)-1-[(1S,5R)-5,8,8-trimethyl-2-oxo-3-oxabicyclo[3.2.1]oct-1-ylcarbonyl]-1,6-dihydropyridine-3-carboxylate
(1S,5R)-1-[(2S)-2-(2-[1,3]dioxolan-2-ylethyl)-4-phenyl-1,2,3,6-tetrahydropyridyl-1-carbonyl]-5,8,8-trimethyl-3-oxabicyclo[3.2.1]octan-2-one
(1S,5R)-1-[(2S)-2-(2-[1,3]dioxolan-2-ylethyl)-4-phenyl-1,2-dihydropyridyl-1-carbonyl]-5,8,8-trimethyl-3-oxabicyclo[3.2.1]octan-2-one
(S)-2-phenyl-1-[(1S,5R)-5,8,8-trimethyl-2-oxo-3-oxabicyclo[3.2.1]octan-1-yl-carbonyl]-2,3-dihydropyridin-4(1H)-one