A series of novel 1-(phenethyl) and 1-(1-heteroarylethyl)-3-substituted piperidine derivatives have been prepared, including their pharmaceutically acceptable salts and various novel key intermediates therefor. The 3-substituent present in these compounds is an unsubstituted or substituted diphenylmethoxy group or a diphenylmethoxy-derived group, while the 1-substituent is unsubstituted or substituted phenethyl or 1-(2-heteroarylethyl) wherein the heteroaryl moiety is thienyl, pyridyl or pyrazinyl. These compounds in the form of both their racemates and 3R-isomers, are useful in therapy as smooth muscle muscarinic receptor antagonists and therefore, are of value in the treatment diseases associated with altered motility and/or smooth muscle tone. The most preferred compound is (3R)-diphenylmethoxy-1-(3,4-methylenedioxyphenethyl)piperidine. Methods for preparing these compounds from known starting materials are provided.
已制备了一系列新颖的1-(苯乙基)和1-(1-杂芳基乙基)-3-取代
哌啶衍
生物,包括它们的药用可接受盐和各种新颖的关键中间体。这些化合物中的3-取代基是未取代或取代的二苯甲氧基团或二苯甲氧基衍生基团,而1-取代基是未取代或取代的苯乙基或1-(2-杂芳基乙基),其中杂芳基部分是
噻吩基、
吡啶基或
吡嗪基。这些化合物以它们的拉
氨酸酯和3R-异构体的形式,在治疗中作为平滑肌
胆碱能受体拮抗剂是有用的,因此,在治疗与改变的蠕动和/或平滑肌张力相关的疾病方面具有价值。最优选的化合物是(3R)-二苯甲氧基-1-(3,4-亚甲二氧基苯乙基)
哌啶。提供了从已知起始材料制备这些化合物的方法。