Cyclization of [4-fluoro-2-(4-nitrophenylthio)phenyl]acetic acid resulted in 3-fluoro-8-nitrodibenzo[b,f]thiepin-10(11H)-one (IIa) which was transformed via the intermediates IVa and Va to the compound Ia. Its reduction gave the amino alcohol Ib. 8-Amino-3-fluorodibenzo[b,f]thiepin-10(11H)-one (IIb) was diazotized and the diazonium salt was converted by treatment with sulfur dioxide and cuprous chloride, followed by dimethylamine, to the N,N-dimethylsulfonamide IIc. Its processing via the intermediates IVc and Vc afforded Ic. Reduction of the amino ketone IIb gave the amino alcohol IVb which was transformed by the Beech method to the hydroxy ketone IVd. Id was obtained via the chloro derivative Vd. A reaction of 3-fluoro-8-iodo-10,11-dihydrodibenzo[b,f]thiepin-10-ol with cuprous cyanide in dimethylformamide led to the cyano alcohol IVe which was used for concluding the synthesis of Ie. Compounds Ia - Id are neuroleptics with central depressant and cataleptic activity; the sedative effects reveal protraction in all cases. In the test of catalepsy the least active compound Ib shows, however, a clear prolongation of this effect. Compound Ia is the most active one in the test of antiapomorphine activity but its effects are not protracted.
[4-
氟-2-(4-
硝基苯硫基)苯基]
乙酸环化生成3-
氟-8-硝基二苯并[
b,f]
噻吩-10(11
H)-酮 (
IIa),经过中间体
IVa 和
Va 转化为化合物
Ia。其还原产生
氨基醇
Ib。8-
氨基-3-
氟二苯并[
b,f]
噻吩-10(11
H)-酮 (
IIb) 被重氮化,重氮盐经过
二氧化硫和
氯化亚铜处理,随后经过
二甲胺转化成 N,N-二甲基磺酰胺
IIc。其经过中间体
IVc 和
Vc 处理得到
Ic。
氨基酮
IIb 的还原得到
氨基醇
IVb,经过 Beech 方法转化为羟基酮
IVd。
Id 通过
氯衍
生物 Vd 获得。3-
氟-8-
碘-10,11-二氢二苯并[
b,f]
噻吩-10-醇与二甲基甲酰胺中的
氰化亚铜反应生成
氰基醇
IVe,用于完成
Ie 的合成。化合物
Ia - Id 是具有中枢抑制和猝痉活性的神经阻滞剂;镇静作用在所有情况下都表现出持续性。在猝痉测试中,最不活跃的化合物
Ib 显示出明显的效果延长。化合物
Ia 在抗阿波吗啉活性测试中是最活跃的,但其效果并不持久。