methyl 7-hydroxy-2-methoxy-8-oxo-6,8,9,10-tetrahydro-7H-7,9a-methanobenzo[a]azulene-1-carboxylate

2-Hydroxy-7-methoxy-8-(methoxycarbonyl)-1,2,3,4-tetrahydrofluorene-2-carboxylic acid

Dimethyl 2-hydroxy-7-methoxy-1,2,3,4-tetrahydrofluorene-2,8-dicarboxylate

7-Cyano-7-hydroxy-2-methoxy-6,7,8,9-tetrahydro-5H-fluorene-1-carboxylic acid methyl ester

(+/-)-Methyl 7-(chloroacetoxy)-2-methoxy-8-oxogibba-1,3,4a(10a),4b-tetraene-1-carboxylate