N,N'-Bis[2-(3-substituted-4-hydroxyphenyl)-ethyl or -2-hydroxyethyl]-polymethylenediamines having .beta.-adrenergic stimulant activity particularly as selective bronchodilators, are prepared generally by condensation of an N-benzylphenethylamine with a polymethylene dihalide or by reaction of an .beta.-bromoacetophenone with an N,N'-dibenzyl-polymethylenediamine, with further operations depending on the nature of the 3-substituent, and subsequently hydrogenating catalytically with for example palladium-on-carbon. The key intermediates are also part of the invention.
具有β-
肾上腺素兴奋剂活性,特别是作为选择性支气管扩张剂的N,N'-双[2-(3-取代-
4-羟基苯基)-乙基或-2-羟乙基]-聚亚甲基二胺通常通过N-苄基苯
乙胺与聚亚甲基二卤代物的缩合反应或β-
溴代
苯乙酮与N,N'-二苄基聚亚甲基二胺的反应制备,进一步操作取决于3-取代基团的性质,然后催化氢化,例如
钯/碳催化剂。关键中间体也是本发明的一部分。