Polivka, Z: Synthesis of the semi-rigid analogues of prothiadene and dithiadene as potential antidepressant and antihistamine agents: 11-/2-(dimethylaminomethyl)cyclohexylidene/-6,11-dihydrodibenzo/b,e/thiepins and 4-/2-(dimethylami|nomethyl)-cyclohexylidene/-4,9-dihydrothieno-/2,3-c/-2-benzothiepins