Absolute Configuration of Novel Bioactive Flavonoids from <i>Tephrosia purpurea</i>
作者:Leng Chee Chang、Daniel Chávez、Lynda L. Song、Norman R. Farnsworth、John M. Pezzuto、A. Douglas Kinghorn
DOI:10.1021/ol990407c
日期:2000.2.1
[structure: see text] Three novel flavonoids, (+)-tephrorins A (1) and B (2) and (+)-tephrosone (3), were isolated from Tephrosia purpurea. Their structures were elucidated by NMR spectral analysis, and their absolute configurations were determined by Mosher ester methodology. Compounds 1 and 2 are flavanones containing an unusual tetrahydrofuran moiety. Compounds 1-3 were evaluated for their potential
[结构:见正文]从紫杉中分离出3种新的类黄酮,(+)-酪蛋白A(1)和B(2)和(+)-酞松酮(3)。通过NMR光谱分析阐明了它们的结构,并且通过Mosher酯法确定了它们的绝对构型。化合物1和2是含有不寻常的四氢呋喃部分的黄烷酮。使用基于细胞的醌还原酶诱导测定法评估化合物1-3的潜在化学预防作用。