亚乙基四羧酸四乙酯

diethyl 3-selenabicyclo[2.2.2]oct-5-ene-2,2-dicarboxylate

(3R,6S)-diethyl 3-(benzo[d][1,3]dioxol-5-yl)-6-(piperidine-1-carbonyl)-2H-selenopyran-2,2(3H,6H)-dicarboxylate

(3R,6S)-3,6-Diphenyl-3,6-dihydro-selenopyran-2,2-dicarboxylic acid diethyl ester

(3R,6R)-6-Methyl-3,6-dihydro-selenopyran-2,2,3-tricarboxylic acid triethyl ester