A novel pyrone derivative was isolated from the ethyl acetate extract of a culture broth of a strain of the fungus Cepha......

A new compound, 3-butyryl-6-[rel-(1S, 2S)-1,2-dihydroxypropyl]-4-hydroxy-2H-pyran-2-one (1), was isolated from the solid......

以a-甲基丙酰乙酸乙酯为原料,经动力学去质子化后,与乙酸乙酯发生γ-酰基化反应,然后环合生成3,5,6-三甲基-4-羟基-2-吡喃酮,在回......