(3R,4R)-4-benzyloxy-2-hydroxymethyl-6,7-methylenedioxy-3-triisopropylsilyloxymethyl-3,4-dihydronaphthalene

methyl (3R,4R)-6,7-methylenedioxy-3-triisopropylsilyloxymethyl-4-(2'-trimethylsilylethoxy)methoxy-3,4-dihydronaphthalene-2-carboxylate

2'-bromothiophenyl (3R,4R)-4-allyloxy-6,7-methylenedioxy-3-triisopropylsilyloxymethyl-3,4-dihydronaphthalene-2-carboxylate

(3R,4R)-4-benzyloxy-2-(4'-methoxy)phenoxymethyl-6,7-methylenedioxy-3-triisopropylsilyloxymethyl-3,4-dihydronaphthalene

(1R,2R,3R,4R)-4-O-(2'-trimethylsilylethoxy)methylpodophyllotoxin