Total Synthesis and in Vitro Anti-Tumor-Promoting Activities of Racemic Acetophenone Monomers from <i>Acronychia trifoliolata</i>
作者:Chihiro Morita、Yukiko Kobayashi、Yohei Saito、Katsunori Miyake、Harukuni Tokuda、Nobutaka Suzuki、Eiichiro Ichiishi、Kuo-Hsiung Lee、Kyoko Nakagawa-Goto
DOI:10.1021/acs.jnatprod.6b00646
日期:2016.11.23
through 1,3- or 3,3-sigmatropic rearrangement. The synthesized racemic compounds were evaluated in an anti-tumor-promoting assay using the Epstein–Barr virus early antigen (EBV-EA) activation induced by 12-O-tetradecanoylphorbol-13-acetate in Raji cells. All tested compounds significantly inhibited EBV-EA activation. Especially, racemic acronyculatin I (1) displayed the most potent inhibitory effects
六苯乙酮衍生物,acronyculatins我(1),J(2),K(3),L(4),N(5)和O(6),最近从Acronychia trifoliolata,和已知的acronyculatin的结构中分离出来。B(7)被修改。由于分离产品的数量有限,以及它们的结构相似性,所以外消旋的肩甲素I–L,N,O和B(1 – 7合成)以确认其结构并获得足够的材料用于生物学评估。通过羟基保护,烯丙基化或烯丙基化,环氧化和环化的各种顺序,将三羟基苯乙酮转化为目标化合物。Ç -Prenylations通过直接加入异戊烯基或通过1,3-或3,3-σ重排进行。通过在Raji细胞中由12 - O-十四烷酰phorbol-13-乙酸酯诱导的爱泼斯坦-巴尔病毒早期抗原(EBV-EA)活化,在抗肿瘤促进试验中评估了合成的外消旋化合物。所有测试的化合物均显着抑制EBV-EA活化。尤其是外消旋顶体素I(1)显示出最有效的抑制作用,IC