Abstract
The synthesis of nine potential metabolites of the title compound is being described. Using oxidation reactions, compound I was transformed to the S-oxide VII, A-oxide IX and A,S-dioxide X. Substitution reactions of 2,10-dichloro-10,11-dihydrodibenzo[b,f]thiepin with 1-ethoxycarbonylpiperazine, piperazine and ethylenediamine afforded the amines II, III, IV and XIII. Leuckart reaction of 2-chlorodibenzo[b,f]thiepin-10(11H)-one led in addition to the expected formamido derivative XI to the heptacyclic pyridine derivative XIV. Hydrolysis of compounds II and XI gave the secondary amine III and the primary amine XII. Oxidation of substances III, XII and XIII afforded the sulfoxides VIII, XV and XVI. Most of the prepared piperazine derivatives exhibit some central depressant, adrenolytic and antihistamine activity.
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