Evidence map›Paper›PMID 34122839›Full record

ArticleChemical science2020

Predicting retrosynthetic pathways using transformer-based models and a hyper-graph exploration strategy.

Philippe Schwaller, Riccardo Petraglia, Valerio Zullo, Vishnu H Nair, Rico Andreas Haeuselmann, Riccardo Pisoni, Costas Bekas, Anna Iuliano, Teodoro Laino

Abstract read
In one paragraph

Article in Chemical science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 123 papers.

0numbers the graph read from it
0cells of the map it votes in
123citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

123 citing papers in PubMed.

  1. Review
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  8. A survey on large language models in biology and chemistry.Experimental & molecular medicine · 2026
    Review
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  10. Review
  11. Article
  12. Article
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  15. Article
  16. Article
  17. Review
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  19. Transfer Learning for Heterocycle Retrosynthesis.Journal of chemical information and modeling · 2025
    Article
  20. Article

63 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Philippe SchwallerIBM Research GmbH Zurich Switzerland phs@zurich.ibm.com.ORCID https://orcid.org/0000-0003-3046-6576
Riccardo PetragliaIBM Research GmbH Zurich Switzerland phs@zurich.ibm.com.
Valerio ZulloDepartment of Chemistry and Industrial Chemistry, University of Pisa Pisa Italy.
Vishnu H NairIBM Research GmbH Zurich Switzerland phs@zurich.ibm.com.
Rico Andreas HaeuselmannIBM Research GmbH Zurich Switzerland phs@zurich.ibm.com.
Riccardo PisoniIBM Research GmbH Zurich Switzerland phs@zurich.ibm.com.
Costas BekasIBM Research GmbH Zurich Switzerland phs@zurich.ibm.com.
Anna IulianoDepartment of Chemistry and Industrial Chemistry, University of Pisa Pisa Italy.ORCID https://orcid.org/0000-0002-6805-3366
Teodoro LainoIBM Research GmbH Zurich Switzerland phs@zurich.ibm.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We present an extension of our Molecular Transformer model combined with a hyper-graph exploration strategy for automatic retrosynthesis route planning without human intervention. The single-step retrosynthetic model sets a new state of the art for predicting reactants as well as reagents, solvents and catalysts for each retrosynthetic step. We introduce four metrics (coverage, class diversity, round-trip accuracy and Jensen-Shannon divergence) to evaluate the single-step retrosynthetic models, using the forward prediction and a reaction classification model always based on the transformer architecture. The hypergraph is constructed on the fly, and the nodes are filtered and further expanded based on a Bayesian-like probability. We critically assessed the end-to-end framework with several retrosynthesis examples from literature and academic exams. Overall, the frameworks have an excellent performance with few weaknesses related to the training data. The use of the introduced metrics opens up the possibility to optimize entire retrosynthetic frameworks by focusing on the performance of the single-step model only.

Identifiers

PMID34122839
PMCPMC8152799

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LicenceCC BY-NC
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.