Synthesis and antiviral activity of benzopyran-2-one derivatives
作者:A. Z. Abyshev、A. T. Alekseev、V. G. Platonov、I. A. Byrkin
DOI:10.1007/bf02219678
日期:1996.7
Compounds of the benzopyran series exhibit a broad spectrum of biological effects, including cardiovascular, membranotropic, psychotropic, immunostimulating, and antioxidant activity [I -6 ] . There were a few communications devoted to the antiviral and antimicrobial activity of benzopyran-2-one derivatives, but these data showed no prospects for this search [7, 8]. However, our investigations led
The synthesis of chromophore ended glycoles, part IV. Bis-coumarin derivatives ended polyglycols
作者:Hülya Tuncer、ÇakL Erk
DOI:10.1002/jhet.5570430501
日期:2006.9
The coumarin derivatives of bis-resorcin ended polyglycols were prepared in two ways: Bis-4-alkyl-7-oxycoumarin ended mono and diethyleneglycols were prepared starting from bis(3-hydroxyphenyl)glycols by coumarin condensation using relevant β-ketoesters. Accordingly, 4-methyl, 4-trifluoromethyl, 4-n-propyl and 4-phenyl derivatives of 7-hydroxycoumarins were prepared in good yields. They were then converted
双间苯二酚封端的聚乙二醇的香豆素衍生物以两种方式制备:双(4-羟基-7)-氧基香豆素封端的单和二甘醇由双(3-羟苯基)二醇通过相关的β-酮酸酯通过香豆素缩合制备。因此,以高收率制备了7-羟基香豆素的4-甲基,4-三氟甲基,4-正丙基和4-苯基衍生物。然后通过分别与三和四乙二醇二氯化物在Na 2 CO 3 / DMF中反应,将它们转化为双香豆素末端的三和四乙二醇衍生物。使用IR,1 H nmr和低分辨率质谱法鉴定了产物。Li +,Na +和Rb + 用稳态荧光光谱法研究了产物在乙腈中阳离子结合行为的金属/配体选择性。
Design and synthesis of novel coumarin analogs and their nematicidal activity against five phytonematodes
C4 and C7 positions in coumarin backbone has been proposed as a potential modification site for providing excellent bioactivity according to previous studies. A series of novelcoumarin derivatives were rationally designed and synthesized by use of a complex catalytic system for a targeted modification at the above sites. These derivatives were assayed for nematicidal activity. As predicted, the derivatization
摘要根据先前的研究,香豆素骨架中C4和C7位的羟基存在被认为是潜在的修饰位点,可提供出色的生物活性。通过使用复杂的催化系统在上述位点进行靶向修饰,合理设计和合成了一系列新型香豆素衍生物。测定这些衍生物的杀线虫活性。如所预期的,衍生化增强了香豆素对抗五个线虫的活性。化合物7b,9a,10c和11c对所有测试的线虫均表现出明显的强杀线虫广谱活性。化合物10c最有效,其LC 50值最低的是对南方根结线虫(5.1μmol/ L),Ditylenchus破坏物(3.7μmol/ L),粘液囊(BurSAphelenchus mucronatus)(6.4μmol/ L)和BurSAphelenchus B. 分别为木糖(2.5μmol/ L)和苯丙酸苯丙胺(3.1μmol/ L)。对结构-活性关系(SAR)的简要研究表明,与C4羟基相比,C7羟基的靶向修饰效果最佳,并且偶联链长对于杀线虫活性至关重要。