(1S,2S,6R,7R)-9-[1-Methoxycarbonyl-meth-(E)-ylidene]-4,4-dimethyl-3,5,10-trioxa-tricyclo[5.2.1.02,6]decane-8-carboxylic acid methyl ester

methyl 2-(2',3'-di-O-methoxymethyl-5'-O-tert-butyldimethylsilyl-β-D,L-arabinofuranosyl) glyoxylate

(1S,2S,6S,7S,8R)-4,4-Dimethyl-9-oxo-3,5,10-trioxa-tricyclo[5.2.1.02,6]decane-8-carboxylic acid methyl ester

(1S,2S,6S,7S,8S)-8-Cyanomethyl-4,4-dimethyl-9-oxo-3,5,10-trioxa-tricyclo[5.2.1.02,6]decane-8-carboxylic acid methyl ester

3-[(3aR,4R,6S,6aS)-6-(tert-Butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-yl]-pyrrole-2,5-dione