作者:Oraphin Chantarasriwong、Woo Cheal Cho、Ayse Batova、Warinthorn Chavasiri、Curtis Moore、Arnold L. Rheingold、Emmanuel A. Theodorakis
DOI:10.1039/b913496d
日期:——
The combination of unique structure and potent bioactivity exhibited by several family members of the caged Garciniaxanthones, led us to evaluate their pharmacophore. We have developed a Pd(0)-catalyzed method for the reverse prenylation of catechols that, together with a Claisen/Diels–Alder reaction cascade, provides rapid and efficient access to various caged analogues. Evaluation of the growth inhibitory activity of these compounds leads to the conclusion that the intact ABC ring system containing the C-ring caged structure is essential to the bioactivity. Studies with cluvenone (7) also showed that these compounds induce apoptosis and exhibit significant cytotoxicity in multidrug-resistant leukemia cells. As such, the caged Garciniaxanthone motif represents a new and potent pharmacophore.
几种带有独特结构和强效生物活性的囊状(caged)Garciniaxanthone家族成员的结合,促使我们评估它们的药效团(pharmacophore)。我们开发了一种Pd(0)催化的方法,用于酚类化合物的反向普雷尼尔化(reverse prenylation),结合Claissen/Diels–Alder反应级联,实现了对各种囊状类似物的快速和高效获取。这些化合物的生长抑制活性评估得出结论,完整的ABC环系统及其C环囊状结构对生物活性至关重要。与克鲁文酮(cluvenone,每个7号的化合物)进行的研究还表明,这些化合物能够诱导细胞凋亡,并在多药耐药性白血病细胞中表现出显著的细胞毒性。因此,囊状Garciniaxanthone结构代表了一种新的强效药效团。