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The remarkable therapeutic importance of taxane diterpenoids as anticancer drugs and their challenging structural complexity have stimulated worldwide enormous efforts. Our group developed a theoretic quantitative model describing the relationship between structure and biological activity of microtubules-stabilizing anticancer agents (MSAAs) aimed at gaining an insight into the specific structural features required for the ligand-receptor binding. The model was demonstrated to be able to estimate/predict the microtubule-stabilising activity for a series of taxanes and provided further details about the influence of each pharmacophore point on the ligand binding affinity. Molecular modeling studies from our group revealed that modified Taxuspines U and X could adopt a conformation similar to the bioactive conformation of paclitaxel and can be well accommodated within the pseudoreceptor model. Following the suggestions coming from the model we rationally designed and synthesized new simplified taxuspine U analogues. In particular, we developed a new methodology for the synthesis of such compounds involving a macrocyclisation reaction via RCM in presence of different functional groups.

A pharmacophore modeling approach to design new taxol® mimics: towards the synthesis of potential anticancer and MDR-reversing agent