Streptonigrin and related compounds. 5. Synthesis and evaluation of some isoquinoline analogs
作者:Koppaka V. Rao、Joseph W. Beach
DOI:10.1021/jm00110a018
日期:1991.6
A series of analogues of streptonigrin, in which the quinoline of ring B is replaced by isoquinoline and the substituted pyridine of ring C is replaced by phenyl, nitrophenyl, aminophenyl, or benzyl functions, have been prepared. Thus, 1-substituted isoquinoline-5,8-diones with 7-amino or 6-(alkylamino) groups were prepared. The various quinones were evaluated for antimicrobial activity against Bacillus
已经制备了一系列链霉菌素的类似物,其中环B的喹啉被异喹啉取代,环C的取代的吡啶被苯基,硝基苯基,氨基苯基或苄基官能团取代。因此,制备了具有7-氨基或6-(烷基氨基)基团的1-取代的异喹啉-5,8-二酮。评估了各种醌类对枯草芽孢杆菌的抗菌活性和对番茄的根抑制生长活性。为了进行比较,用链霉菌素检查了特定结构变化对这些活性的影响。证实了氨基醌功能对于活性的必要性。关于抗菌活性,与喹啉衍生物相比,异喹啉类似物似乎活性较低。然而,值得注意的是,与1-苯基异喹啉相比,1-苄基异喹啉和1-硝基苯基异喹啉具有更高的抗菌活性。与具有抗菌活性的结果相反,在根生长抑制试验中,大多数异喹啉类似物的活性与链霉菌素相当,甚至更高。1-硝基苯基异喹啉再次似乎是最活跃的。与苯基类似物相比,苄基类似物具有相同或更高的效力是出乎意料的,并且对如先前所考虑的对延长的共轭和金属结合所需的几何形状的需求提出了质疑。这也为结构变化开