The synthesis of a series of 6-fluoro-10-piperazino-10,11-dihydrodibenzo[b,f]thiepins Ic-IIIc, Vc and VIc is described; these compounds are derivatives of the neuroleptic agents perathiepin (Ia), octoclothepin (IIIa), doclothepin (Va) and their hydroxyethyl analogues IIa and VIa in which the metabolic hydroxylation to position 6 was made impossible by blockade. The synthesis used common procedures via the intermediates VII-XVIII. Fluorination in position 6 does not influence much the pharmacological profile of the compounds indicating that hydroxylation in position 6 is only a minor metabolic pathway. The most interesting substance is the 6-fluoro derivative of octoclothepin (IIIc) which is a potent central depressant and neuroleptic agent with some protraction of the sedative effects.
描述了一系列6-
氟-10-
哌嗪基-10,11-二氢二苯并[
b,f]
噻吩 Ic-IIIc,
Vc 和
VIc 的合成;这些化合物是神经阻滞药物perathiepin (
Ia), octoclothepin (
IIIa), doclothepin (
Va) 及其羟乙基类似物
IIa 和
VIa 的衍
生物,其中通过阻断使代谢羟基化到6位变得不可能。合成过程采用了常规程序
via 中间体
VII-XVIII。6位
氟化并不会对化合物的药理特性产生太大影响,表明6位的羟基化只是一个较小的代谢途径。最有趣的物质是八
氯噻吩的6-
氟衍
生物 (
IIIc), 它是一种有效的中枢
抑制剂和神经阻滞剂,具有一定的镇静效果的延长。