Conjugates of catecholamines. 1. N-Alkyl-functionalized carboxylic acid congeners and amides related to isoproterenol
作者:Kenneth A. Jacobson、Debra Marr-Leisy、Roberto P. Rosenkranz、Michael S. Verlander、Kenneth L. Melmon、Murray Goodman
DOI:10.1021/jm00358a007
日期:1983.4
substituted amide. The compounds were prepared generally via the reductive amination of norepinephrine with a keto acid or a preformed keto amide. An alternate synthesis of the model amide derivatives, involving activation of the carboxylic acid congeners and coupling with amines, was complicated in the case of short-chain derivatives by facile cyclization to lactams. In vitro evaluation of these compounds
合成了一系列官能化的儿茶酚胺(同类物),其中形式上,异丙肾上腺素的N-异丙基已被长度可变的直链烷基链延长,并被羧基或取代的酰胺封端。通常通过将去甲肾上腺素与酮酸或预先形成的酮酰胺还原胺化来制备化合物。在短链衍生物的情况下,通过酰胺环容易地环合成内酰胺,模型酰胺衍生物的替代合成涉及羧酸同系物的活化和与胺的偶合。这些化合物作为潜在的β-肾上腺素能激动剂的体外评估表明,尽管羧酸同类物的功效相对较低,模型酰胺衍生物的效力高度依赖于烷基链的长度以及酰胺上取代基的性质。通常,芳族酰胺是最有效的,尽管芳族基团上取代基的性质和位置会极大地影响其效力。讨论了这些研究的意义,包括一般的β-肾上腺素药物设计以及羧酸同类物与载体的连接。