作者:Munekazu Iinuma、Hideki Tosa、Tetsuro Ito、Toshiyuki Tanaka、Domingo A. Madulid
DOI:10.1016/0031-9422(96)00111-2
日期:1996.7
From the roots of Cratoxylum formosanum, two new xanthones, 2,7-dihydroxy-1,8-dimethoxyxanthone and 1,4,7-trihydroxy-8-methoxyxanthone, were isolated, in addition to seven known xanthones and two flavonoids. Among the xanthones, 1,4,7-trihydroxyxanthone was the first isolation from the natural sources. Structures were determined by spectral analyses.
从 Cratoxylum formosanum 的根中分离出两种新的呫吨酮,即 2,7-二羟基-1,8-二甲氧基氧杂蒽酮和 1,4,7-三羟基-8-甲氧基氧杂蒽酮,此外还有七个已知的氧杂蒽酮和两种黄酮类化合物。在氧杂蒽酮中,1,4,7-三羟基氧杂蒽酮是第一个从天然来源中分离出来的。通过光谱分析确定结构。