Synthesis and vasorelaxing evaluation of α-methylidene-γ-butyrolactone bearing quinolin-2(1H)-one and 3,4-dihydroquinolin-2(1H)-one derivatives
作者:Tai-Chi Wang、Yue-Ling Zhao、Daih-Huang Kuo
DOI:10.1016/s0223-5234(01)01270-3
日期:2001.12
C(gamma)-fluorophenyl derivatives in the 3,4-dihydroquinolin-2(1H)-one series. When comparing the positional isomers, alpha-methylidene-gamma-butyrolactone substituted at the 7-position of the 3,4-dihydroquinolin-2(1H)-ones were more active than their 6-substituted counterparts, which in turn were more active than the 8-substituted derivatives. The vasorelaxing effect of these 3,4-dihydroquinolin-2(1H)-ones was proved
这项研究的主要目的是探讨带有喹啉2(1H)-的α-亚甲基-γ-丁内酯及其3,4-二氢衍生物的血管松弛结构-活性关系。这些目标化合物分两步合成,从以溴甲基酮处理的芳基-OH开始,然后进行Reformatsky型缩合反应。喹啉2(1H)-一个α-亚甲基-γ-丁内酯的血管舒张活性低于3,4-二氢。在3,4-二氢喹啉-2(1H)-一个系列中,在内酯的C(γ)处具有甲基或苯基的化合物比C(γ)-氟苯基衍生物具有更高的血管舒张作用。比较位置异构体时,在3的7位上取代的α-亚甲基-γ-丁内酯 4-二氢喹啉-2(1H)-酮比其6-取代的对应物活性更高,而6-取代的对应物则比8-取代的衍生物活性更高。这些3,4-二氢喹啉-2(1H)-酮的血管舒张作用被证明是剂量依赖性的。其中,7-[((2,3,4,5-四氢-4-亚甲基-5-氧代-2-苯并呋喃-2-基)甲氧基]-喹啉-2(1H)-一(10b)最多对KCl诱导