7,9-bis(p-methoxybenzyl)-7,9-diaza-6-hydroxy-5-vinylbicyclo<4.3.1>decane-8,10-dione

(Z)-11,13-bis(p-methoxybenzyl)-11,13-diaza-9-methyl-2-oxabicyclo<7.2.2>tridec-4-ene-10,12-dione