1.In the present paper, a series of xanthene-2-carboxylic acids and xanthone-2-carboxylic acids with electron withdrawing groups on the 7-position had been synthesized.

本文合成了一系列7位拉電子基團(tuán)取代的氧雜蒽-2-羧酸及氧雜蒽酮-2-羧酸化合物。

2.In the present paper, a series of xanthene-2-carboxylic acids and xanthone-2-carboxylic acids with electron withdrawing groups on the 7-position had been synthesized.

本文合成了一系列7位拉電子基團(tuán)取代的氧雜蒽-2-羧酸及氧雜蒽酮-2-羧酸化合物。

3.Xanthone was reduced to xanthydrol by sodium borohydride.

用硼氫化鈉對呫噸酮還原得到呫噸醇。