The conversion of oridonin to spirolactone-type or enmein-type diterpenoid: Synthesis and biological evaluation of ent-6,7-seco-oridonin derivatives as novel potential anticancer agents
作者:Lei Wang、Dahong Li、Shengtao Xu、Hao Cai、Hequan Yao、Yihua Zhang、Jieyun Jiang、Jinyi Xu
DOI:10.1016/j.ejmech.2012.03.024
日期:2012.6
commercial available natural product oridonin (1), a practical synthesis of ent-6,7-seco-oridonin derivatives (2, 3, 5, and 9) was accomplished and their biological activities were evaluated. The conversion of spirolactone-type diterpenoid to enmein-type was first completed. The results demonstrated that all synthesized ent-6,7-seco-oridonin derivatives could markedly inhibit the proliferation of cancer
从市售的天然产物冬凌草甲素(起始1),的一个实际合成ENT -6,7-开环-oridonin衍生物(2,3,5,和9)中的溶液来实现和它们的生物活性进行了评价。首先完成了螺内酯型二萜类化合物向半球蛋白型的转化。结果表明,所合成ENT -6,7-开环-oridonin衍生物可显着抑制癌细胞的增殖。与紫杉醇相比,最具细胞毒性的化合物5在A549细胞中具有相似的效力,而在Bel-7402细胞中具有较低的细胞毒性。化合物5也比在小鼠母体化合物与冬凌草甲素MGC-803胃癌更有效体内。然后进一步设计合成了一系列新颖的5的14- O-衍生物,它们具有比5更好的活性,并且在体外具有与紫杉醇相似的活性。本研究还讨论了冬凌草甲素衍生物的结构-活性关系。