Substitution reactions of 11-(2-bromoethyl)- and 11-(3-bromopropyl)-6,11-dihydrodibenzo[b,e]thiepin-11-carbonitrile and further of 10-(2-bromoethyl)- and 10-(3-bromopropyl)-10,11-dihydrodibenzo[b,f]thiepin-10-carbonitrile with ethyl 4-phenylpiperidine-4-carboxylate, 4-phenylpiperidin-4-ol, 4-(2-tolyl)piperidin-4-ol, 4-(4-fluorophenyl)piperidin-4-ol, 4-(2-oxobenzimidazolin-1-yl)-piperidine and 1-phenyl-1,3,8-triazaspiro[4,5]decan-4-one afforded the tricyclic piperidinoalkyl nitriles IV-XIII which are cyclic analogues of the antidiarrheal agents diphenoxylate (I) and loperamide (III). Out of the compounds prepared only IV and XI showed a significant inhibitory effect towards diarrhea elicited by intravenously administered serotonin in mice.
11-(2-溴乙基)-和11-(3-溴丙基)-6,11-二氢二苯并[be]噻吩-11-碳腈的取代反应,以及10-(2-溴乙基)-和10-(3-溴丙基)-10,11-二氢二苯并[bf]噻吩-10-碳腈与乙酸4-苯基哌啶-4-羧酸酯、4-苯基哌啶-4-醇、4-(2-甲苯基)哌啶-4-醇、4-(4-氟苯基)哌啶-4-醇、4-(2-氧代苯并咪唑啉-1-基)-哌啶和1-苯基-1,3,8-三氮杂螺[4,5]癸烷-4-酮的进一步反应,得到了三环哌啶烷基腈化合物IV-XIII,它们是抗腹泻药物地芬诺啶(I)和洛哌啶(III)的环式类似物。在制备的化合物中,只有IV和XI对小鼠静脉注射5-羟色胺引起的腹泻表现出显著的抑制作用。