(R)-2-(tert-Butyl-dimethyl-silanyloxy)-3-[(2R,3R,4R,5S,6S)-4-(tert-butyl-dimethyl-silanyloxy)-6-ethylsulfanyl-3,5-dimethyl-tetrahydro-pyran-2-yl]-propionaldehyde

(2R,5S,6S,7S)-1-Benzyloxy-6-(tert-butyl-dimethyl-silanyloxy)-2-hydroxy-8,8-dimethoxy-5,7-dimethyl-octan-4-one

(R)-1-Benzyloxy-3-{2-[(1S,2S,3S)-2-(tert-butyl-dimethyl-silanyloxy)-4,4-dimethoxy-1,3-dimethyl-butyl]-[1,3]dithian-2-yl}-propan-2-ol

(S)-2-[(2R,4R,5R)-2-(4-Methoxy-phenyl)-5-methyl-[1,3]dioxan-4-yl]-propionaldehyde

(2S,3R,4R)-3-(tert-Butyl-dimethyl-silanyloxy)-5-(4-methoxy-benzyloxy)-2,4-dimethyl-pentanal