Abstract:
:Combretastatin A-4 (CA-4) in phosphate and serine pro-drug forms is under phase II clinical trials. With our interest of discovering CA-4 inspired new chemical entities, a novel series of 4,5-diaryl-2-aminoimidazole analogues of the compound was designed and synthesized by an efficient and diversity feasible route involving atom economical arene C-H bond arylation. Interestingly, four compounds showed potent cell-based antiproliferative activities in nanomolar concentrations. Among the compounds, compound 12 inhibited the proliferation of several types of cancer cells much more efficiently than CA-4. It depolymerized microtubules, induced spindle defects, and stalled mitosis in cells. Compound 12 bound to tubulin and inhibited the polymerization of tubulin in vitro. In addition, podophyllotoxin and CA-4 inhibited the binding of compound 12 to tubulin. The distinctive pharmacophoric features of the bridging motif as well as quinoline nucleus were explored. We noted also a valuable quality of compound 12 as a potential probe in characterizing new CA-4 analogues.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Chaudhary V,Venghateri JB,Dhaked HP,Bhoyar AS,Guchhait SK,Panda Ddoi
10.1021/acs.jmedchem.6b00101subject
Has Abstractpub_date
2016-04-14 00:00:00pages
3439-51issue
7eissn
0022-2623issn
1520-4804journal_volume
59pub_type
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