Abstract
6-Formyl-7-hydroxy-5-methoxy-2-pentamethylenechromanone (2) was prepared from the naturally occurring “Visnagin” and condensed with benzil, o-phenylenediamine and 3,4-diaminobenzophenone to give the corresponding imidazolylchromanone derivatives 3-5. Knoevenagel reaction of compound 2 with different active methylene compounds afforded benzodipyranone derivatives 12a - c which may be considered as analogues to the naturally occurring “Xanthyletin and Graveolone Compounds”. The structural formula of the new compounds were established by using different methods for their preparation in addition to the instrumental analyses. Some compounds in this study were biologically evaluated for their ability to bind to DNA.
摘要:从天然存在的“维斯纳金”制备了6-甲醛基-7-羟基-5-甲氧基-2-戊二亚甲基色酮(2),并与苯二酮、邻苯二胺和3,4-二氨基苯基酮缩合,得到相应的咪唑基色酮衍生物3-5。化合物2与不同活性亚甲基化合物的Knoevenagel反应得到苯二吡喃酮衍生物12a-c,可视为天然存在的“黄酮类和格雷沃隆类化合物”的类似物。通过不同方法的制备和仪器分析,确定了新化合物的结构式。本研究中的一些化合物已经进行了生物学评估,以评估它们与DNA结合的能力。