(1S,2R,5S,6S)-5-(tert-Butyl-dimethyl-silanyloxy)-3-((E)-3-hydroxy-3-methyl-but-1-enyl)-7-oxa-bicyclo[4.1.0]hept-3-en-2-ol

Acetic acid (1S,4R,4aS,5S,6R,7R,8aR)-8a-(tert-butyl-dimethyl-silanyloxymethyl)-6,7-dihydroxy-8-oxo-1,4,4a,5,6,7,8,8a-octahydro-1,4-methano-naphthalen-5-yl ester

(1S,5R,6R)-5-(tert-Butyl-dimethyl-silanyloxy)-4-(tert-butyl-dimethyl-silanyloxymethyl)-7-oxa-bicyclo[4.1.0]hept-3-en-2-one

(1S,5S,6R)-5-(tert-Butyl-dimethyl-silanyloxy)-4-(tert-butyl-dimethyl-silanyloxymethyl)-7-oxa-bicyclo[4.1.0]hept-3-en-2-one

(1R,2S,5R,6R)-5-(tert-Butyl-dimethyl-silanyloxy)-4-(tert-butyl-dimethyl-silanyloxymethyl)-7-oxa-bicyclo[4.1.0]hept-3-en-2-ol