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我们合成了化合物1和未知化合物2,并对它们进行了光氧化的研究,结果得到了二个儿茶酚环均被打开的化合物3和4。 3和4中的β-羟基取代假吲哚环经还原脱水可以变回为吲哚环。二者可以作为钩吻素子~([1])全合成的中间体。
We synthesized compound 1 and unknown compound 2 and studied their photooxidation. As a result, compounds 3 and 4 with two open catechol rings were obtained. The 3-hydroxy-substituted indolenine ring in 3 and 4 can be converted back to indole ring by reductive dehydration. The two can be used as kojicin ~ ([1]) fully synthesized intermediates.