Reactions of naphthostyril (I) with primary and secondary amines and titanium tetrachloride afforded cyclic amidines III-IX. Hydrogenation of I on Pd-C resulted in the 6,7,8,8a-tetrahydro derivative X which gave by treatment with sodium amide and 3-dimethylaminopropyl chloride the N-(aminoalkyl) compound XI. Reduction of I and its N-methyl derivative II with sodium amalgam in aqueous sodium hydroxide gave the 2a,3,4,5-tetrahydro derivatives XII and XIII. Reaction of XIII with sodium amide and 3-dimethylaminopropyl chloride afforded the 2a-(aminoalkyl) compound XIV. 1,3,4,5-Tetrahydro-1-benzazepin-2-one (XV) treated with primary amines and titanium tetrachloride gave the amidines XVI-XVIII. 3-Methyl-7,8,9,9a-tetrahydro-1H-benz[d,e]isoquinoline (XIX) was reduced with sodium borohydride to compound XX which was alkylated with propargyl bromide to 1-methyl-2-propargyl-2,3,3a,4,5,6-hexahydro-1H-benz[d,e]isoquinoline (XXI). An attempt to prepare the 2-(2-phenylethyl) analogue by treatment of compound XX with phenylacetyl chloride and by the following reduction with lithium aluminium hydride resulted in the open-chain amine XXII. The lactams I, II, X, and XIII showed some discoordinating, hypothermic, peripheral vasodilating, hyperglycaemic, diuretic and antiinflammatory effects. The amidines III-IX and XVI-XVIII had local anaesthetic, slight hypotensive, antiarrhythmic, peripheral myorelaxant, papaverine-like spasmolytic and thiopental potentiating effects.
萘基苯基甲酰胺(I)与一、二级胺和四氯化钛反应得到环氨基甲酸酰胺III-IX。在Pd-C上对I进行氢化得到6,7,8,8a-四氢衍生物X,经过与钠胺和3-二甲氨基丙基氯化物处理得到N-(氨基烷基)化合物XI。将I及其N-甲基衍生物II与水合氢氧化钠中的汞铝齐还原得到2a,3,4,5-四氢衍生物XII和XIII。XIII与钠胺和3-二甲氨基丙基氯化物反应得到2a-(氨基烷基)化合物XIV。1,3,4,5-四氢-1-苯并吖啶-2-酮(XV)经过与一级胺和四氯化钛处理得到酰胺XVI-XVIII。3-甲基-7,8,9,9a-四氢-1H-苯[d,e]异喹啉(XIX)经过硼氢化钠还原得到化合物XX,随后与丙炔基溴化物烷基化得到1-甲基-2-丙炔基-2,3,3a,4,5,6-六氢-1H-苯[d,e]异喹啉(XXI)。尝试通过将化合物XX与苯乙酰氯处理,然后用锂铝氢化还原制备2-(2-苯乙基)类似物,结果得到开链胺XXII。苯基乙酰胺I、II、X和XIII显示出一些不协调、低体温、外周血管扩张、高血糖、利尿和抗炎作用。酰胺III-IX和XVI-XVIII具有局部麻醉、轻微降压、抗心律失常、外周肌松弛、似阿片碱的解痉和硫喷妥增强作用。