Discovery of novel antitumor dibenzocyclooctatetraene derivatives and related biphenyls as potent inhibitors of NF-κB signaling pathway
摘要:
Several dibenzocyclooctatetraene derivatives (5-7) and related biphenyls (8-11) were designed, synthesized, and evaluated for inhibition of cancer cell growth and the NF-kappa B signaling pathway. Compound 5a, a dibenzocyclooctatetraene succinimide, was discovered as a potent inhibitor of the NF-kappa B signaling pathway with significant antitumor activity against several human tumor cell lines (GI(50) 1.38-1.45 mu M) and was more potent than paclitaxel against the drug-resistant KBvin cell line. Compound 5a also inhibited LPS-induced NF-kappa B activation in RAW264.7 cells with an IC50 value of 0.52 mu M, prevented I kappa B-alpha degradation and p65 nuclear translocation, and suppressed LPS-induced NO production in a dose-dependent manner. The antitumor data in cellular assays indicated that relative positions and types of substituents on the dibenzocyclooctatetraene or acyclic biphenyl as well as torsional angles between the two phenyls are of primary importance to antitumor activity. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis of unsymmetrical biphenyls as potent cytotoxic agents
作者:Gang Wu、Huan-Fang Guo、Kun Gao、Yi-Nan Liu、Kenneth F. Bastow、Susan L. Morris-Natschke、Kuo-Hsiung Lee、Lan Xie
DOI:10.1016/j.bmcl.2008.08.050
日期:2008.10
Twenty-six unsymmetricalbiphenyls were synthesized and evaluated for cytotoxic activity against DU145, A549, KB and KB-Vin tumor cell lines. Three compounds 27, 35 and 40 showed very potent activity against the HTCL panel with an IC(50) value range of 0.04-3.23 microM. In addition, fourteen active compounds were all more potent against the drug-resistant KB-Vin cell line than the parental KB cell