Reactions of 10-bromodibenzo[b,f]thiepin (IIIa), its 2-chloro derivative IIIb and 2,8-dichloro derivative IIIc with cuprous cyanide in boiling dimethylformamide gave the carbonitriles Iabc out of which the first two were reduced with sodium borohydride to the 10,11-dihydro derivatives IVab; the amides VIIab were obtained as by-products. Alkaline hydrolysis of the nitriles IVab or their mixtures with the amides VIIab afforded the acids VIIIab. By the addition of 3-dimethylaminopropylmagnesium chloride to the nitrile Ia cis and trans-11-(3-dimethylaminopropyl)-10,11-dihydrodibenzo[b,f]thiepin-10-carbonitriles (XVIII) were obtained. Alkylation of the nitrile IVa with 2-dimethylaminoethyl chloride and 3-dimethylaminopropyl chloride resulted in the 10-(dimethylaminoalkyl) derivatives XX and XXI. A reaction of the crude cyano alcohol XXIII with phosphorus tribromide afforded the 2-bromoethyl derivative XXIV as a by-product only. The main product was the hydrobromide of the spirocyclic imidate XXX which affords by acid hydrolysis the spirocyclic lactone XXXI. An analogous sequence proceeding via the ether XXVI and the alcohol XXVII leads to the 10-(3-bromopropyl) derivative XXVIII as the main product. An attempt at preparing the same substance by alkylation of the nitrile IVa with 1,3-dibromopropane gave stereoisomeric dinitriles XXXII. At high doses the amides VIIab reveal an anticonvulsant effect, the acids VIIIab antiinflammatory actions, the basic nitrile cis-XVIII antireserpine activity and the basic nitriles XX and XXI a central depressant and pseudo-analgesic activity in addition to further peripheral and cardiovascular effects.
10-
溴代二苯并[
b,f]
噻吩(
IIIa)及其2-
氯衍
生物IIIb和2,8-二
氯衍
生物IIIc与在沸腾的二甲基甲酰胺中的亚
铜氰化物反应,形成碳腈类物质
Iabc,其中前两者经过
钠硼氢化物还原成为10,11-二氢衍
生物IVab;酰胺
VIIab作为副产物被获得。对碳腈类物质
IVab或其与酰胺
VIIab的混合物进行碱性
水解,形成酸类物质
VIIIab。通过向碳腈类物质
Ia cis和
trans-11-(3-二甲基
氨基丙基)-10,11-二氢二苯并[
b,f]
噻吩-10-碳腈类物质(
XVIII)中加入3-二甲基
氨基
丙基氯化镁,得到了相应产物。将碳腈类物质
IVa与2-二甲基
氨基乙基
氯化物和3-二甲基
氨基丙基
氯化物烷基化,形成10-(二甲基
氨基烷基)衍
生物XX和
XXI。将粗制的
氰醇
XXIII与
三溴化磷反应,只得到了2-
溴乙基衍
生物XXIV作为副产物。主要产物是螺环
亚胺酯的
氢溴酸盐XXX,经过酸
水解得到螺环内酯
XXXI。类似的过程通过醚
XXVI和醇
XXVII导致10-(3-
溴丙基)衍
生物XXVIII作为主要产物。尝试通过将碳腈类物质
IVa与
1,3-二溴丙烷烷基化来制备相同物质,得到了立体异构的双碳腈物质
XXXII。高剂量下,酰胺
VIIab显示出抗惊厥作用,酸类物质
VIIIab具有抗炎作用,基础性碳腈物质
cis-XVIII具有抗
利血平活性,而基础性碳腈物质
XX和
XXI除了具有中枢抑制和伪镇痛作用外,还具有进一步的外周和心血管作用。