3-methoxyhomobarrelenone

(1S,4R,4aR,5R,9S,9aS)-dimethyl 5-methoxy-6-oxo-4,4a,5,6,9,9a-hexahydro-1H-1,4-epoxy-5,9-ethenobenzo[7]annulene-2,3-dicarboxylate

3-氯双环[3.2.2]壬-3,6,8-三烯-2-酮

(1S,4R,4aR,5R,9R,9aS)-dimethyl 5-chloro-6-oxo-4,4a,5,6,9,9a-hexahydro-1H-1,4-epoxy-5,9-ethenobenzo[7]annulene-2,3-dicarboxylate

3-(4-methoxy-phenyl)-isoxazole-4,5-dicarboxylic acid dimethyl ester