5H-[1,2]Diazepine-1,2-dicarboxylic acid dimethyl ester

dimethyl (1α,2β,5β,6α)-7,9-diphenyl-3,4,7,8-tetrazatricyclo<4.3.0.02,5>non-8-ene-3,4-dicarboxylate

dimethyl (1α,2β,5β,6α)-9,9-diphenyl-3,4,7,8-tetrazatricyclo<4.3.0.02,5>non-7-ene-3,4-dicarboxylate

dimethyl (1α,2β,4β,5α)-6,7-diazatricyclo<3.2.0.02,4>heptane-6,7-dicarboxylate

dimethyl (1α,2β,4β,5α)-3,3-dimethyl-6,7-diazatricyclo<3.2.0.02,4>heptane-6,7-dicarboxylate