(2R,3S,4S,5R)-3-(tert-butyldimethylsilyloxy)-2,4-dimethyl-5-(triisopropylsilyloxy)heptanal

(2S,3R)-2-((4R,5R,6R)-6-((S)-1-iodopropan-2-yl)-2-(4-methoxyphenyl)-5-methyl-1,3-dioxan-4-yl)pentan-3-ol

(2S,3R)-1-((R)-4-benzyl-2-thioxothiazolidin-3-yl)-2-methyl-3-(triisopropylsilyloxy)pentan-1-one

(2R,3S,4R,5R)-1-((R)-4-benzyl-2-thioxothiazolidin-3-yl)-3-hydroxy-2,4-dimethyl-5-(triisopropylsilyloxy)heptan-1-one

(2R,3S,4S,5R)-1-((R)-4-benzyl-2-thioxothiazolidin-3-yl)-3-(tert-butyldimethylsilyloxy)-2,4-dimethyl-5-(triisopropylsilyloxy)heptan-1-one