(1R,3R,5R,9R,13R,15S,18S)-3-methoxy-18-methyl-13-<(E)-4-methylpent-1-enyl>-12,19,20-trioxatricyclo<13.3.1.15,9>icosane-7,11-dione

{(2S,4S,6R)-4-(tert-butyldiphenylsilanyloxy)-6-[(2S)-2-methoxy-3-((2R,3S,6S)-3-methyl-6-(oxoethyl)tetrahydro-2H-pyran-2-yl)propyl]tetrahydro-2H-pyran-2-yl}acetonitrile

{(2S,4S,6R)-4-(tert-butyldiphenylsilanyloxy)-6-[(2S)-3-((2R,3S,6S)-6-formyl-3-methyltetrahydro-2H-pyran-2-yl)-2-methoxypropyl]tetrahydro-2H-pyran-2-yl}acetonitrile

(2S,5S,6R)-6-{(2S)-3-[(2R,4S,6S)-4-(tert-butyldiphenylsilanyloxy)-6-cyanomethyltetrahydro-2H-pyran-2-yl]-2-methoxypropyl}-5-methyltetrahydro-2H-pyran-2-carboxylic acid isopropyl ester

(1R,3S,5R,7R,9R,13R,15S,18S)-7-(tert-Butyl-diphenyl-silanyloxy)-3-methoxy-18-methyl-13-((E)-4-methyl-pent-1-enyl)-12,19,20-trioxa-tricyclo[13.3.1.15,9]icosan-11-ol