(3aR,4S,6aS)-4-(((tert-butyldiphenylsilyl)oxy)methyl)hexahydrospiro[cyclopenta[b]furan-5,2'-[1,3]dithiolan]-2-ol

(3aR,4S,6aS)-4-(((tert-butyldiphenylsilyl)oxy)methyl)tetrahydrospiro[cyclopenta[b]furan-5,2'-[1,3]dithiolan]-2(3H)-one

(7S,8R,9S)-9-(tert-Butyl-diphenyl-silanyloxymethyl)-8-[(Z)-4-(4-methyl-2,6,7-trioxa-bicyclo[2.2.2]oct-1-yl)-but-2-enyl]-1,4-dithia-spiro[4.4]nonan-7-ol