CESAItE CASAGHANDE, AhIBROGIO INVEHNIZZI, 1~OSAKO I?ERRINI, AND GIOHGIO c. 1' 1 EIlRARI ... Ileseurch Laborutories, Sirties 8.pn ., AI iluu (.1Jiri), I hly IZeceived !Youember 13, 1967 Revised Manuscript IZeceiued February fd, 1968 ... .i series of compotirids with the pyrrolo [a, lu]isoqiiinoliiie ring system was syiithexizecl by Ts:chitschibabiii cyclizatioti itlid subsequent transformatioris. The pharmacological activity of the iiew conipoiitids was stiidied.