The methylenebisflavonoids 7-hydroxy-3-hetaryl-8-(4-oxo-4H-3-chromenylmethyl)-4H-4-chromenones and 7-hydroxy-3-hetaryl-8-(4-oxo-4H-3-chromenylmethyl)-2H-2-chromenones were synthesized via the reaction of 7-hydroxy-8-dialkylaminomethyl-3-hetarylcoumarins and chromones with 3-(dimethylamino)-1-(2-hydroxyphenyl)prop-2-en-1-one. Recyclization of 3-(1,3-benzthiazol-2-yl)-7-hydroxy-8-(4-oxo-4H-3-chromenylmethyl)-2H-2-chromenone through the action of N,N- and N,O-binucleophiles produced new 3-benzthiazolylcoumarin derivatives modified by pyrazole, isoxazole, and pyrimidine heterocycles.
亚甲基双
黄酮 7-羟基-3-杂
环己烷基-8-(4-氧代-4H-3-苯并
吡喃基甲基)-4H-4-苯并
吡喃酮和 7-羟基-3-杂
环己烷基-8-(4-氧代-4H-3-苯并
吡喃基甲基)-2H-2-苯并
吡喃酮是通过 7-羟基-8-二烷基
氨基甲基-3-杂
环己烷基
香豆素和苯并
吡喃酮与 3-(二甲基
氨基)-
1-(2-羟基苯基)丙-2-烯-1-酮反应合成的。通过 N,N-和 N,O-双亲核试剂的作用,3-(1,3-
苯并噻唑-2-基)-7-羟基-8-(4-氧代-4H-3-苯并
吡喃基甲基)-2H-2-苯并
吡喃酮的再环化产生了新的 3-
苯并噻唑基
香豆素衍
生物,这些衍
生物由
吡唑、
异噁唑和
嘧啶杂环修饰而成。