作者:James N. Roitman、Karin Mann、Eckhard Wollenweber
DOI:10.1016/0031-9422(92)80053-h
日期:1992.3
Abstract Fronds of various ferns in the genus Notholaena produce an exudate which consists mostly of flavonoid aglycones. In some species we found small amounts of two dibenzoylmethanes or β-diketones. These have been identified by spectroscopic methods. Both, 2′,β,4-trihydroxy-4′,6′-dimethoxychalcone and 2′,β-dihydroxy-4′,6′,4-trimethoxychalcone, are novel natural products. The structures have been
摘要 Notholaena 属的各种蕨类植物的叶子会产生主要由黄酮苷元组成的渗出液。在某些物种中,我们发现了少量的二苯甲酰甲烷或 β-二酮。这些已通过光谱方法鉴定。2',β,4-三羟基-4',6'-二甲氧基查尔酮和2',β-二羟基-4',6',4-三甲氧基查尔酮都是新型天然产物。结构已通过后一化合物的合成得到证实。