glabrescence. The structure of compound 1 was in agreement with that of the previously reported senegalensin, isolated from the stem bark of Erythrina senegalensis. The structure of senegalensin was revised from structure 2 to structure 1 by spectroscopic means. Compound 2, the regioisomer of 1, was confirmed as euchrenone b(10) by comparison with the spectral data of the reported euchrenone b(10), isolated
从羟乙基rythrina suberosa var的木材中分离了两个带有羟基异丙基二氢
呋喃部分的异
戊烯基异
黄酮(1和2)。发光。化合物1的结构与先前报道的塞内加仑素的结构一致,该塞内加仑素是从塞里加利刺桐的茎皮中分离出来的。塞内加仑素的结构通过光谱学方法从结构2改变为结构1。化合物2的1的区域异构体通过与从Euchresta horsfieldii的根中分离出的报道的euchrenone b(10)的光谱数据进行比较而确认为euchrenone b(10)。2的结构通过2D NMR光谱分析和X射线晶体学分析对其对
溴苯甲酰基衍
生物(2b)进行确定。