The antidepressant compounds are compounds of the formula:
wherein R1 and R2 are either both hydrogen or both halogen (particularly chlorine), and if R1 and R2 are both hydrogen, R3 and R4 are both halogen (particularly chlorine), otherwise both R3 and R4 are hydrogen; or a pharmaceutically acceptable salt thereof. The compounds may be prepared by: (a) reducing 1,8-dihaloanthrquinone with zinc powder in aqueous ammonia, followed by acidic treatment to provide 1,8-dihaloanthracene; (b) Diels-Alder [4+2] cycloaddition reaction of the 1,8-dihaloanthracene and acrolein at room temperature in the presence of boron trifluoride etherate to obtain a mixture of the intermediate compounds 1,8-dihalo-9,10-dihydo-9,10-ethanoanthracene-11-carbaldehyde and 4,5-dihalo-9,10-dihydo-9,10-ethanoanthracene-11-carbaldehyde; (c) separating the mixture of carbaldehydes by column chromatography; and (d) direct reductive amination of the respective carbaldehydes to obtain the corresponding antidepressant compounds of the above formula.
抗抑郁化合物是以下式的化合物:
其中R1和R2可以是氢或卤素(特别是
氯),如果R1和R2都是氢,则R3和R4都是卤素(特别是
氯),否则R3和R4都是氢;或其药用盐。这些化合物可以通过以下方法制备:(a)用
锌粉在
水合
氨中还原1,8-二卤
蒽醌,然后经酸处理得到1,8-二卤
蒽;(b)在室温下,将1,8-二卤
蒽和
丙烯醛与
三氟化硼醚存在下进行Diels-Alder [4+2]环加成反应,得到中间化合物1,8-二卤-9,10-二氢-9,10-乙基
蒽-11-
甲醛和4,5-二卤-9,10-二氢-9,10-乙基
蒽-11-
甲醛的混合物;(c)通过柱层析分离
甲醛混合物;和(d)直接还原胺化各自的
甲醛,得到上述式的相应抗抑郁化合物。