Journal of Computer-Aided Molecular Design

, Volume 26, Issue 11, pp 1207–1215

IADE: a system for intelligent automatic design of bioisosteric analogs


DOI: 10.1007/s10822-012-9609-3

Cite this article as:
Ertl, P. & Lewis, R. J Comput Aided Mol Des (2012) 26: 1207. doi:10.1007/s10822-012-9609-3


IADE, a software system supporting molecular modellers through the automatic design of non-classical bioisosteric analogs, scaffold hopping and fragment growing, is presented. The program combines sophisticated cheminformatics functionalities for constructing novel analogs and filtering them based on their drug-likeness and synthetic accessibility using automatic structure-based design capabilities: the best candidates are selected according to their similarity to the template ligand and to their interactions with the protein binding site. IADE works in an iterative manner, improving the fitness of designed molecules in every generation until structures with optimal properties are identified. The program frees molecular modellers from routine, repetitive tasks, allowing them to focus on analysis and evaluation of the automatically designed analogs, considerably enhancing their work efficiency as well as the area of chemical space that can be covered. The performance of IADE is illustrated through a case study of the design of a nonclassical bioisosteric analog of a farnesyltransferase inhibitor—an analog that has won a recent “Design a Molecule” competition.


IADE Bioisosteric design Scaffold hopping Chemical space Automated iterative drug design 

Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  1. 1.Novartis Institutes for BioMedical ResearchBaselSwitzerland

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