Department of Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78229, United States.
J Nat Prod. 2012 Mar 23;75(3):494-6. doi: 10.1021/np200796e. Epub 2012 Jan 19.
Three new O-prenylated flavonoids, amyrisins A-C (1-3), were isolated from the leaves and twigs of Amyris madrensis, along with the known compound polygamain (4). The structures of 1-3 were elucidated on the basis of the analysis of spectroscopic data interpretation. Amyrisins B (2) and C (3) showed moderate cytotoxicity against PC-3 and DU 145 prostate cancer cells with IC(50) values of 17.5 and 23 μM, respectively, while amyrisin A (1) did not show any cytotoxicity at the highest concentration tested, 50 μM. Polygamain (4) exhibited potent antiproliferative and microtubule-depolymerizing activities.
从远志的叶子和小枝中分离得到三种新的 O-prenylated 类黄酮,分别为 amyrisins A-C(1-3),以及已知化合物 polygamin(4)。根据光谱数据分析,确定了 1-3 的结构。Amyrisins B(2)和 C(3)对前列腺癌细胞 PC-3 和 DU 145 显示出中等的细胞毒性,IC50 值分别为 17.5 和 23 μM,而 amyrisin A(1)在最高测试浓度 50 μM 时没有显示出任何细胞毒性。Polygamain(4)表现出很强的抗增殖和微管解聚活性。