(1S,4S,5R)-2-Methoxy-5-(4-methoxy-benzyloxy)-bicyclo[2.2.1]hept-2-ene

(3aS,5R,6aR,7S,8R,10S,10aS)-8,10-Diacetoxy-7-acetoxymethyl-5-hydroxy-4-methylene-3-oxo-decahydro-2-oxa-cyclopenta[d]naphthalene-7-carboxylic acid methyl ester

(1S,2R,4S,4aS,5S,8aR)-2,4-Diacetoxy-1-acetoxymethyl-6-oxo-5-triethylsilanyloxymethyl-4a-(2-trimethylsilanyl-ethoxymethoxymethyl)-decahydro-naphthalene-1-carboxylic acid methyl ester

(4aS,5S,6R,8aS)-6-Benzyloxy-5-benzyloxymethyl-4a-(2-trimethylsilanyl-ethoxymethoxymethyl)-4a,5,6,7,8,8a-hexahydro-1H-naphthalen-2-one

(4aR,5S,6R,8aS)-6-Benzyloxy-5-benzyloxymethyl-4a-(2-trimethylsilanyl-ethoxymethoxymethyl)-octahydro-naphthalen-2-one