Semisynthetic Ursolic Acid Fluorolactone Derivatives Inhibit Growth with Induction of p21waf1 and Induce Apoptosis with Upregulation of NOXA and Downregulation of c-FLIP in Cancer Cells
作者:Ana S. Leal、Rui Wang、Jorge A. R. Salvador、Yongkui Jing
DOI:10.1002/cmdc.201200282
日期:2012.9
potent inhibitor synthesized, compound 20. At 1 μM, the cell cycle arrested at the G1 phase with upregulation of p21waf1. Apoptosis was induced at an inhibitor concentration of 8 μM with upregulation of NOXA and downregulation of c‐FLIP. These data indicate that fluorolactone derivatives of ursolic acid have improved antiproliferative activity, acting through arrest of the cell cycle and induction of apoptosis
一系列熊果酸((1 S,2 R,4a S,6a R,6a S,6b R,8a R,10 S,12a R,14b S)‐10‐羟基‐1,2,6a,6b, 9,9,12a-七甲基-2,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-十四氢-1 H使用亲电氟化试剂Selectfluor合成了具有12-氟-13,28β-内酯部分的-picene-4a-羧酸)衍生物。在AsPC-1胰腺癌细胞中评估了这些新型化合物的抗增殖作用,并评估了结构-活性关系(SAR)。在合成的化合物中,带有杂环的熊果酸衍生物(如咪唑或甲基咪唑)和氰基烯酮是AsPC-1胰腺癌细胞生长的更有效抑制剂。2-氰基-3-氧代- 12α氟URS--1-烯13,28β内酯,化合物20,是最有效的抑制剂,IC 50为0.7,0.9和1.8μ值中号分别在胰腺癌细胞系AsPC-1,MIA PaCa-2和PANC-1中表达。该