The invention relates to a method for preparing platonins, comprising steps of adding 2,4-Dimethyl thiazole and 1-iodoheptane for reaction at 195℃ for 0.5-2 hours to acquire an intermediate product adding triethyl orthoformate, acetic anhydride and the intermediate product for reaction at 165℃ for 0.5-2 hours to acquire a mixture and purifying the mixture to acquire the platonins.本發明係有關於一種普拉托寧(Platonin)的製備方法,包括加入2,4-二甲基噻唑(2,4-Dimethyl thiazole)與1-碘庚烷(1-iodoheptane)於195℃直接反應0.5~2小時,得到一中間產物;加入原甲酸三乙酯(triethyl orthoformate)、乙酸酐(acetic anhydride)與中間產物於165℃進行反應0.5~2小時,得到一綠色固體;以及純化綠色固體,以得到普拉托寧。(S1)‧‧‧步驟一(S2)‧‧‧步驟二(S3)‧‧‧步驟三