1'-phenyl-1',7'-dihydrospiro[cyclohexane-1,4'-[1,7]epoxybenzo[g][1,2,4,5]tetraoxonine]

(1S,4S,7R)-1-phenyl-4-(p-tolyl)-1,7-dihydro-1,7-epoxybenzo[g][1,2,4,5]tetraoxonine

3,6-diphenyl-1,2,4,5-tetraoxane

(1S,4S,7R)-1,4-diphenyl-1,7-dihydro-1,7-epoxybenzo[g][1,2,4,5]tetraoxonine

4,4-dimethyl-1-phenyl-1,7-dihydro-1,7-epoxybenzo[g][1,2,4,5]tetraoxonine