2-Hydroxy-8-methoxy-5-[3-(toluene-4-sulfonyloxy)-propyl]-1,2,3,4-tetrahydro-naphthalene-2-carboxylic acid

dimethyl (2RS,8aSR,10RS,10aSR)-10-hydroxy-2-methoxymethyloxy-12-oxo-2,3,4,5,6,7,8,8a,9,10-decahydro-1H-2,10a-ethanophenanthrene-8,8-dicarboxylate

8-Methoxy-2-methoxymethoxy-5-[3-(toluene-4-sulfonyloxy)-propyl]-1,2,3,4-tetrahydro-naphthalene-2-carboxylic acid

1-(3'-toluene-4''-sulfonyloxypropyl)-7-trichloroacetoxy-8,9-dihydro-4a,7-methano-4aH-benzocycloheptene-4,6(5H,7H)-dione

(2RS,8aSR,10RS,10aSR)-10-benzoyloxy-2-methoxymethyloxy-12-oxo-2,3,4,5,6,7,8,8a,9,10-decahydro-1H-2,10a-ethanophenanthrene-8,8-dicarboxylic acid