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以5,6-二氢-6-烷基(芳基)-2H-吡喃-2,4-二酮(1)、芳胺(2)和原甲酸三乙酯进行缩合反应,合成了20 个3-芳胺甲烯基-6-烷基(芳基)-5,6-二氢-2H-吡喃-2,4-二酮(3). 由于分子内氢键的形成, 化合物3 由一对构象异构体4 和5 组成. 生物活性初步测定结果表明, 这些化合物均有一定的杀菌活性
The condensation reaction of 5,6-dihydro-6-alkyl (aryl) -2H-pyran-2,4-dione (1), aryl amine (2) and triethyl orthoformate gave 20 3-arylamine methyl-6-alkyl (aryl) -5,6-dihydro-2H-pyran-2,4-dione (3). Due to the formation of intramolecular hydrogen bonds, compound 3 consists of a pair of conformers 4 and 5. The preliminary bioassay results show that these compounds have a certain bactericidal activity