The synthesis of 2'-heptylcarbamoyloxy-2-methyl-6,7-benzomorphan is described. The compound is structurally related to the cholinesterase inhibitor heptylphysostigmine (MF 201) because the angular methyl group of the esoroline nucleus has been changed into a bridging carbon and the anilinic nitrogen has been replaced by a methylene group. This compound proved to be a potent cholinesterase in vitro inhibitor.