Scaffold-hopping potential of fragment-based de novo design: the chances and limits of variation.
The identification of new lead structures is a pivotal task in early drug discovery. Molecular de novo design of ligand structures has been successfully applied in various drug discovery projects. Still, the question of the scaffold hopping potential of drug design by adaptive evolutionary optimization has been left unanswered. It was unclear whether de novo design is actually able to leap away from given chemotypes ("activity islands"), allowing for rescaffolding of compounds. We have addressed these questions by scrutinizing different scoring functions of our de novo design software Flux for their ability to enable scaffold-hops for various target classes. We evaluated both the potential bioactivity and the scaffold diversity of de novo generated structures. For several target classes, known lead structures were reconstructed by the de novo algorithm ("lead-hopping"). We demonstrate that for one or multiple templates of a given chemotype, other chemotypes are reached during de novo compound generation, thus indicating successful scaffold-hops.
Johann Wolfgang Goethe-Universität, Institut für Organische Chemie und Chemische Biologie, Siesmayerstrasse 70, Frankfurt am Main, Germany.
Bjoern A
BA
Krueger
Axel
A
Dietrich
Karl-Heinz
KH
Baringhaus
Gisbert
G
Schneider
D000465:Algorithms; D003198:Computer Simulation; D015195:Drug Design; D008024:Ligands; D015394:Molecular Structure; D004364:Pharmaceutical Preparations / Q000138:chemical synthesis / Q000737:chemistry*; D012984:Software
D008024:Ligands; D004364:Pharmaceutical Preparations