Abstract
New 5-dialkylaminomethyl-2-amino-2-oxazolines have been synthezised in two steps from the corresponding dialkylamines. They were evaluated in-vitro as H1-antagonists. Compounds 1c, 1d and 1j significantly antagonized histamine-induced contraction of guinea-pig trachea with a rightward shift of the concentration-response curve to histamine. Compound 1f, 5-[(4-benzyl-1-piperidinyl)methyl]-2-amino-2-oxazoline, induced an increase in acetylcholine Emax (the maximal response to acetylcholine 10−3 M) and a shift to the left of the concentration-response curve. The lack of effect of this compound on histamine-induced contraction rules out a non-selective potentiation of the contraction mechanisms. Preliminary structure-activity results were reported partly based on physicochemical results.
摘要:从相应的二烷基胺中,通过两步合成了新的5-二烷基氨甲基-2-氨基-2-噁唑啉。它们在体外被评估为H1-拮抗剂。化合物1c、1d和1j显著拮抗了组织胺诱导的豚鼠气管收缩,使组织胺的浓度-反应曲线向右移。化合物1f,5-[(4-苄基-1-哌啶基)甲基]-2-氨基-2-噁唑啉,导致乙酰胆碱Emax(对乙酰胆碱10^-3 M的最大反应)增加,并使浓度-反应曲线向左移。该化合物对组织胺诱导的收缩无影响,排除了非选择性增强收缩机制的可能性。初步的结构活性结果部分基于理化结果报告。