gave very potent vasodilators: 6 and 14. Acylation and sulfonylation of terminal amino nitrogen afforded much less potent compounds. In contrast to the hypothesis, alkylation on the ring carbon and the terminal nitrogen of the cyclic amine afforded less active compounds except for compound 11. The most active compounds, 6, 11 and 14, showed more potent vasodilatory effects and more selective activity to
基于式1中二胺部分的环化和烷基化可得到高活性化合物的假设,由环状二胺制备了一系列新的5-
异喹啉磺酰胺衍
生物,如式2所示。随后根据将配方局部注射到狗的股动脉和/或椎动脉后,根据动脉血流量的增加在体内评估其血管舒张作用。式1中二胺结构的环化产生非常有效的血管扩张剂:6和14。末端
氨基氮的酰化和磺酰化产生的效力低得多。与该假设相反,除化合物11外,在环碳和环胺末端氮上的烷基化反应产生的活性较低。化合物6、11和14的活性最高。