Synthesis of 2-(alkylamino)-5,6- and -6,7-dihydroxy-3,4-dihydroquinazolines and evaluation as potential dopamine agonists
作者:John A. Grosso、David E. Nichols、Jai D. Kohli、Dana Glock
DOI:10.1021/jm00348a018
日期:1982.6
(ADTN's), heterocyclic congeners were prepared. Several 2-(alkylamino)-5,6- and -6,7-dihydroxy-3,4-dihydroquinazolines were synthesized and tested for a dopamine-like vasodilatory action in the canine renal artery. The 6,7-disubstituted series had a weak antagonist effect against dopamine. Neither 5,6- nor 6,7-dihydroxy substitution gave dopamine agonists. Measured pKa values confirmed the expectation that
基于2-氨基二羟基-1,2,3,4-四氢萘(ADTN)的已知多巴胺能性质,制备了杂环同源物。合成了几种2-(烷基氨基)-5,6-和-6,7-二羟基-3,4-二氢喹唑啉,并测试了其在犬肾动脉中的多巴胺样血管舒张作用。6,7-二取代系列对多巴胺的拮抗作用较弱。5,6-或6,7-二羟基取代均未产生多巴胺激动剂。测得的pKa值证实了人们期望二氢喹唑啉比多巴胺更碱性,这可能是缺乏多巴胺样作用的可能原因之一。