Lead identification of conformationally restricted β-lactam type combretastatin analogues: Synthesis, antiproliferative activity and tubulin targeting effects
作者:Miriam Carr、Lisa M. Greene、Andrew J.S. Knox、David G. Lloyd、Daniela M. Zisterer、Mary J. Meegan
DOI:10.1016/j.ejmech.2010.09.033
日期:2010.12
The synthesis and study of the structure–activityrelationships of a series of rigid analogues of combretastatinA-4 are described which contain the 1,4-diaryl-2-azetidinone (β-lactam) ring system in place of the usual ethylene bridge present in the natural combretastatin stilbene products. The 1,4-diaryl-2-azetidinones are unsubstituted at C-3, or contain methyl substituent(s) at C-3. The most potent
Discovery of Novel 3,4-Dihydro-2(1H)-Quinolinone Sulfonamide Derivatives as New Tubulin Polymerization Inhibitors with Anti-Cancer Activity
作者:Juan Ma、Guo-Hua Gong
DOI:10.3390/molecules27051537
日期:——
4-tetrahydroquinoline-6-sulfonamide exhibited the strongest inhibitory effect on the proliferation of HeLa (IC50: 1.34 μM), and this value correlated well with the inhibitoryactivities of the compound against tubulinpolymerization (IC50: 6.74 μM). In summary, a new type of quinoline-sulfonamide derivative with tubulinpolymerizationinhibitoryactivity was discovered, and it can be used as a lead compound for further
Synthesis and Biochemical Evaluation of 3-Phenoxy-1,4-diarylazetidin-2-ones as Tubulin-Targeting Antitumor Agents
作者:Thomas F. Greene、Shu Wang、Lisa M. Greene、Seema M. Nathwani、Jade K. Pollock、Azizah M. Malebari、Thomas McCabe、Brendan Twamley、Niamh M. O’Boyle、Daniela M. Zisterer、Mary J. Meegan
DOI:10.1021/acs.jmedchem.5b01086
日期:2016.1.14
Structure-activity relationships for a series of 3-phenoxy-1,4-diarylazetidin-2-ones were investigated, leading to the discovery of a number of potent antiproliferative compounds, including trans-4-(3-hydroxy-4-methoxyphenyl)-3-phenoxy-1-(3,4,5-trimethoxyphenyl)azetidin-2-one (78b) and trans-4-(3-amino-4-methoxyphenyl)-3-phenoxy-1-(3,4,5-trimethoxyphenyl)azetidin-2-one (90b). X-ray crystallography studies indicate the potential importance of the torsional angle between the 1-phenyl A ring and 4-phenyl B ring for potent antiproliferative activity and that a trans configuration between the 3-phenoxy and 4-phenyl rings is generally optimal. These compounds displayed IC50 values of 38 and 19 nM, respectively, in MCF-7 breast cancer cells, inhibited the polymerization of isolated tubulin in vitro, disrupted the microtubular structure in MCF-7 cells as visualized by confocal microscopy, and caused G(2)/M arrest and apoptosis. Compound 90b possessed a mean GI50 value of 22 nM in the NCI60 cell line screen, displayed minimal cytotoxicity, and was shown to interact at the colchicine-binding site on beta-tubulin. Phosphate and amino acid prodrugs of both 78b and 90b were synthesized, of which the alanine amide 102b retained potency and is a promising candidate for further clinical development.
Synthesis, biochemical and molecular modelling studies of antiproliferative azetidinones causing microtubule disruption and mitotic catastrophe
作者:Niamh M. O’Boyle、Miriam Carr、Lisa M. Greene、Niall O. Keely、Andrew J.S. Knox、Thomas McCabe、David G. Lloyd、Daniela M. Zisterer、Mary J. Meegan
DOI:10.1016/j.ejmech.2011.07.039
日期:2011.9
The structure-activity relationships of antiproliferative beta-lactams, focusing on modifications at the 4-position of the beta-lactam ring, is described. Synthesis of this series of compounds was achieved utilizing the Staudinger and Reformatsky reactions. The antiproliferative activity was assessed in MCF-7 cells, where the 4-(4-ethoxy)phenyl substituted compound 26 displayed the most potent activity with an IC(50) value of 0.22 mu M. The mechanism of action was demonstrated to be by inhibition of tubulin polymerisation. Cell exposure to combretastatin A-4 and 26 led to arrest of MCF-7 cells in the G2/M phase of the cell cycle and induction of apoptosis. Additionally, mitotic catastrophe for combretastatin A-4 and for 26 was demonstrated in breast cancer cells for the first time, as evidenced by the formation of giant, multinucleated cells. (C) 2011 Elsevier Masson SAS. All rights reserved.
Cariou, Michel; Carlier, Roger; Simonet, Jacques, Bulletin de la Societe Chimique de France, 1986, # 5, p. 781 - 792