Aphanamixins A–F, Acyclic Diterpenoids from the Stem Bark of <i>Aphanamixis polystachya</i>
作者:Xiaopo Zhang、Yifeng Tan、Youbin Li、Lifeng Jin、Na Wei、Haifeng Wu、Guoxu Ma、Qingxia Zheng、Yu Tian、Junshan Yang、Junqing Zhang、Xudong Xu
DOI:10.1248/cpb.c14-00056
日期:——
structures were established through a comprehensive analysis of NMR spectroscopic data and high resolution mass spectrometric data. The absolute configurations of carbon stereocenters were determined by means of auxiliary chiral α-methoxy-α-(trifluoromethyl)phenylacetic acid (MTPA) derivatives and circular dichroism (CD), respectively. All the new isolates were tested for their antiproliferative activity
从多头奇想木(WALL)JN BARKER的茎皮中分离出六个新的无环二萜类化合物,称为Aphanamixins AF(1-6),以及两个已知的nemoralisin和nemoralisin C化合物。通过对NMR光谱数据和高分辨率质谱数据进行全面分析,确定了它们的结构。碳立体中心的绝对构型分别通过辅助手性α-甲氧基-α-(三氟甲基)苯基乙酸(MTPA)衍生物和圆二色性(CD)确定。测试了所有新分离株的抗HepG2,AGS,MCF-7和A-549癌细胞的增殖活性,并显示出弱的细胞毒性(IC50> 10 µM)。此外,我们强调了在自然界中很少见到以无环骨架为特征的六个新的二萜。