A series of compounds related to the previously reported 5-[3-(4-carbethoxy-4- phenylpiperidino) propylidene]-lO, ll-dihydro-5K-dibenzo [a, d] cycloheptene has been prepared. These include analogs in which the tricyclic ring and piperidino group were separated by one-to three-carbon side chains in differing states of oxidation. In several cases the corresponding reversed esters were also prepared. Related compounds were ...