Heating of 2-(2-hydroxyphenylthio)benzoic acid (XX) with acetic anhydride gave dibenz[b,e]-1,4-oxathiepin-6-one (XXII). Demethylation of 2-(2-methoxyphenylthio)benzyl bromide (XI) with boron tribromide and the following treatment with aqueous sodium hydroxide in dimethyl sulfoxide afforded 6H-dibenz[b,e]-1,4-oxathiepin (I) which was halogenated with chlorine or N-bromosuccinimide only to the undesirable 2-halogeno derivatives II and III. A reaction of 2-(2-methoxyphenylthio)benzaldehyde (XII) with chloroform and 50% aqueous sodium hydroxide in the presence of triethylbenzylammonium chloride led to the α-chloro acid XIX whose demethylation with boron tribromide and the following cyclization with sodium hydroxide in dimethyl sulfoxide gave a mixture with prevailing 6H-dibenz[b,e]-1,4-oxathiepin-6-carboxylic acid (IV). Amino alcohols XXV-XXVIII were obtained by reactions of 2-(2-fluorophenylthio)benzaldehyde (XXIV) with the corresponding Grignard reagents and the products were cyclized with sodium hydride in dimethylformamide to the title compounds V-VIII. While compounds V and VI showed antireserpine effects and can be considered as potential antidepresants, compound VIII has a strong central depressant activity, brings about ataxia, hypothermia and potentiates the cataleptic action of neuroleptics (properties of a tranquillizer).
用乙酸酐加热2-(2-羟基苯硫基)苯甲酸(XX),得到二苯并[b,e]-1,4-噁硫杂环己酮(XXII)。用三溴化硼对2-(2-甲氧基苯硫基)苄溴(XI)进行去甲基化处理,然后在二甲基亚砜中用水合氢氧化钠处理,得到6H-二苯并[b,e]-1,4-噁硫杂环己烯(I),随后用氯气或N-溴代琥珀酰亚胺氧化只得到不良的2-卤代衍生物II和III。2-(2-甲氧基苯硫基)苯甲醛(XII)与氯仿和50%水合氢氧化钠在三乙基苄基氯化铵的存在下发生反应,得到α-氯代酸(XIX),再用三溴化硼去甲基化处理,随后在二甲基亚砜中用氢氧化钠进行环化反应,得到以6H-二苯并[b,e]-1,4-噁硫杂环己烯-6-羧酸(IV)为主的混合物。通过2-(2-氟苯硫基)苯甲醛(XXIV)与相应的格氏试剂发生反应得到氨基醇XXV-XXVIII,然后用二甲基甲酰胺中的氢氧化钠进行环化反应,得到标题化合物V-VIII。化合物V和VI显示出抗利血平作用,可被视为潜在的抗抑郁药物,而化合物VIII具有强烈的中枢抑制活性,导致共济失调、低体温,并增强神经阻滞剂的痉挛作用(具有镇静药的特性)。