Journal
JOURNAL OF CHEMINFORMATICS
Volume 9, Issue -, Pages -Publisher
BMC
DOI: 10.1186/s13321-017-0235-x
Keywords
De novo design; Recurrent neural networks; Reinforcement learning
Categories
Funding
- European Union's Horizon research and innovation program under the Marie Sklodowska-Curie [676434]
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This work introduces a method to tune a sequence-based generative model for molecular de novo design that through augmented episodic likelihood can learn to generate structures with certain specified desirable properties. We demonstrate how this model can execute a range of tasks such as generating analogues to a query structure and generating compounds predicted to be active against a biological target. As a proof of principle, the model is first trained to generate molecules that do not contain sulphur. As a second example, the model is trained to generate analogues to the drug Celecoxib, a technique that could be used for scaffold hopping or library expansion starting from a single molecule. Finally, when tuning the model towards generating compounds predicted to be active against the dopamine receptor type 2, the model generates structures of which more than 95% are predicted to be active, including experimentally confirmed actives that have not been included in either the generative model nor the activity prediction model.
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