Collect. Czech. Chem. Commun. 1982, 47, 3114-3133

Tricyclic psychotropic agents containing two chalcogen atoms in the central ring: 2-Fluoro-8-substituted 6-(4-piperidyl)-6H-dibenz[b,e]-1,4-oxathiepins

Karel Šindelář, Jiří Holubek, Emil Svátek, Miroslav Ryska, Antonín Dlabač, Jiřina Metyšová and Miroslav Protiva

Research Institute for Pharmacy and Biochemistry, 130 60 Prague 3


The aldehydes VIa and VIb were transformed by treatment with chloroform and sodium hydroxide in the presence of triethylbenzylammonium chloride to the α-chloro acids VIIa and VIIb which were demethylated with boron tribromide and the products were cyclized with sodium hydroxide in dimethyl sulfoxide to 2-fluoro-6H-dibenz[b,e]-1,4-oxathiepin-6-carboxylic acids Ia and Ib. Syntheses of the aldehydes XVIIbcd were carried out and the products treated with 1-methyl-4-piperidylmagnesium chloride to give the amino alcohols XVIbcd. Cyclizations with sodium hydride in dimethylformamide afforded the title compounds XIIbcd; compounds XVIIIbc and XIX were isolated as by-products and characterized. Compound XIIb was transformed via the secondary amine XIIIb to the amino alcohol XIVb which was esterified to the decanoate XVb. Substances XIIbcd are highly active neuroleptic agents with an important prolongation of the central depressant effect. The decanoate XVb revealed the properties of a medium long acting depot neuroleptic.