Cited by 1,847Computational Drug Discovery MethodsAI-based Problem Solving and PlanningArtificial Intelligence in Games

Planning chemical syntheses with deep neural networks and symbolic AI

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Segler, Marwin H. S., Preuss, Mike, Waller, Mark P.·2018·Nature

Abstract

To plan the syntheses of small organic molecules, chemists use retrosynthesis, a problem-solving technique in which target molecules are recursively transformed into increasingly simpler precursors. Computer-aided retrosynthesis would be a valuable tool but at present it is slow and provides results of unsatisfactory quality. Here we use Monte Carlo tree search and symbolic artificial intelligence (AI) to discover retrosynthetic routes. We combined Monte Carlo tree search with an expansion policy network that guides the search, and a filter network to pre-select the most promising retrosynthetic steps. These deep neural networks were trained on essentially all reactions ever published in organic chemistry. Our system solves for almost twice as many molecules, thirty times faster than the traditional computer-aided search method, which is based on extracted rules and hand-designed heuristics. In a double-blind AB test, chemists on average considered our computer-generated routes to be equivalent to reported literature routes.

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Research works printed but not linked: 6

  1. [1][1] Clayden, J., Greeves, N., Warren, S. & Wothers, P. Organic chemistry, 2nd Ed. (Oxford University Press, 2008). -
  2. [2][2] Br¨ uckner, R. Reaktionsmechanismen: organische Reaktionen, Stereochemie, moderne Synthesemethoden (Springer-Verlag, 2014). -
  3. [5][5] Kurti, L. & Czak´ o, B. Strategic applications of named reactions in organic synthesis (Elsevier, 2005). -
  4. [20][20] Fick, R. Konzepte zur Syntheseplanung: Strukturelle ¨ Ahnlichkeit und strategische Bindungen . Ph.D. thesis, Friedrich-Alexander-Universit¨ at Erlangen-N¨ urnberg (1996). -
  5. [47][47] Sierra, M. A. & de la Torre, M. C. Dead ends and detours en route to total syntheses of the 1990s. Angewandte Chemie International Edition 39 , 1538-1559 (2000). -
  6. [53][53] Silver, D. Reinforcement Learning and Simulation-Based Search . Ph.D. thesis, University of Alberta (2009). -

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Authors
Segler, M. H. S., Preuss, M., & Waller, M. P.
Affiliations
  • University of Münster (DE)
  • Shanghai University (CN)
Corresponding author
  • Segler, Marwin H. S.
  • Waller, Mark P.
Venue
Nature
Published
2018-03
Volume
555
Issue
7698
Pages
604-610
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2747592475
Cited by
1,847
References
77
Citations by year
2026: 163 · 2025: 232 · 2024: 217 · 2023: 230 · 2022: 215 · 2021: 270 · 2020: 265 · 2019: 188 · 2018: 66 · 2017: 1
FWCI
147.91
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Leiden Repository (Leiden University) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Funders
Deutsche Forschungsgemeinschaft (SFB858)
Topics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Physical Sciences › Computer Science › Artificial Intelligence › AI-based Problem Solving and Planning
  • Physical Sciences › Computer Science › Artificial Intelligence › Artificial Intelligence in Games
Keywords
retrosynthesis, computer-aided synthesis planning, Monte Carlo tree search, symbolic AI, filter networks, organic reactions, deep neural network, chemical reaction prediction, small organic molecules
MeSH terms
Artificial Intelligence, Chemistry, Organic, Monte Carlo Method, Neural Networks, Computer, Chemistry Techniques, Synthetic

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