(1S,2R,4S,5R,6R)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-4-[1,3]dithian-2-ylidenemethyl-7-oxa-bicyclo[4.1.0]heptan-2-ol

(4aR,6R,8S,8aR)-6,8-Bis-(tert-butyl-dimethyl-silanyloxy)-octahydro-isochromen-3-one

(((4aR,6R,8S,8aR)-octahydrospiro[isochromene-3,2'-[1,3]dithiane]-6,8-diyl)bis(oxy))bis(tert-butyldimethylsilane)