4,6-dimethoxy-3,5-dimethyl-tetrahydro-pyran-2-carbaldehyde

7-(tert-butyl-dimethyl-silanyloxy)-5-methoxy-4,6-dimethyl-1-phenyl-hept-1-en-3-ol

(2S,3S,4S)-5-(benzyloxy)-3-methoxy-2,4-dimethylpentanal