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  • Title: Synthesis of a new 4-aza-2,3-didehydropodophyllotoxin analogues as potent cytotoxic and antimitotic agents.
    Author: Kamal A, Suresh P, Mallareddy A, Kumar BA, Reddy PV, Raju P, Tamboli JR, Shaik TB, Jain N, Kalivendi SV.
    Journal: Bioorg Med Chem; 2011 Apr 01; 19(7):2349-58. PubMed ID: 21402478.
    Abstract:
    A series of novel conjugates of 4-aza-2,3-didehydropodophyllotoxins (11a-w) were synthesized by a straightforward one-step multicomponent synthesis that demonstrated cytotoxicity against five human cancer cell lines (breast, oral, colon, lung and ovarian). All the twenty three compounds (11a-w) have been examined for the inhibition of tubulin polymerization. Among these compounds, 11a, 11k and 11p exhibited inhibition of polymerization tubulin comparable to podophyllotoxin apart from disruption of microtubule organization within the cells. Flow cytometric analysis showed that these compounds (11a, 11k and 11p) arrested the cell cycle in the G2/M phase of cell cycle leading to caspase-3 dependent apoptotic cell death.
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