The exact identical same structure, although this time changing the thioether to a methylene group revealed a strongest compound of the series called AY 24614.[6]
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^ abPugsley TA, Lippmann W (September 1979). "Effect of acute and chronic treatment of tandamine, a new heterocyclic antidepressant, on biogenic amine metabolism and related activities". Naunyn-Schmiedeberg's Archives of Pharmacology. 308 (3): 239–47. doi:10.1007/BF00501388. PMID503251. S2CID23533861.
^Pugsley T, Lippmann W (May 1976). "Effects of tandamine and pirandamine, new potential antidepressants, on the brain uptake of norepinephrine and 5-hydroxytryptamine and related activities". Psychopharmacology. 47 (1): 33–41. doi:10.1007/BF00428698. PMID1085452. S2CID8354739.
^Lippmann W, Seethaler K (April 1977). "Effects of tandamine and pirandamine, selective blockers of biogenic amine uptake mechanisms, on gastric acid secretion and ulcer formation in the rat". Life Sciences. 20 (8): 1393–400. doi:10.1016/0024-3205(77)90367-8. PMID853871.
^Asselin, Andre A.; Humber, Leslie G.; Komlossy, Jacqueline; Charest, Marie P. (1976). "Cycloalkanoindoles. 2. 1-Alkyl-1,2,3,4-tetrahydrocarbazole-1-ethanamines and related compounds. Potential antidepressants". Journal of Medicinal Chemistry. 19 (6): 792–797. doi:10.1021/jm00228a011. ISSN0022-2623. PMID950648.