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Reaction and retrosynthesis prediction are fundamental tasks in computational chemistry that have recently garnered attention from both the machine learning and drug discovery communities. Various deep learning approaches have been proposed…

Machine Learning · Computer Science 2023-06-29 Ziqiao Meng , Peilin Zhao , Yang Yu , Irwin King

Retrosynthesis is a problem to infer reactant compounds to synthesize a given product compound through chemical reactions. Recent studies on retrosynthesis focus on proposing more sophisticated prediction models, but the dataset to feed the…

Machine Learning · Computer Science 2020-10-05 Katsuhiko Ishiguro , Kazuya Ujihara , Ryohto Sawada , Hirotaka Akita , Masaaki Kotera

Retrosynthesis is the task of planning a series of chemical reactions to create a desired molecule from simpler, buyable molecules. While previous works have proposed algorithms to find optimal solutions for a range of metrics (e.g.…

Artificial Intelligence · Computer Science 2024-04-16 Austin Tripp , Krzysztof Maziarz , Sarah Lewis , Marwin Segler , José Miguel Hernández-Lobato

We propose a new model for making generalizable and diverse retrosynthetic reaction predictions. Given a target compound, the task is to predict the likely chemical reactants to produce the target. This generative task can be framed as a…

Machine Learning · Computer Science 2019-10-23 Benson Chen , Tianxiao Shen , Tommi S. Jaakkola , Regina Barzilay

Predicting the outcome of a chemical reaction using efficient computational models can be used to develop high-throughput screening techniques. This can significantly reduce the number of experiments needed to be performed in a huge search…

The main target of retrosynthesis is to recursively decompose desired molecules into available building blocks. Existing template-based retrosynthesis methods follow a template selection stereotype and suffer from limited training…

Chemical Physics · Physics 2022-12-26 Chaochao Yan , Peilin Zhao , Chan Lu , Yang Yu , Junzhou Huang

Retrosynthesis planning is a fundamental challenge in chemistry which aims at designing reaction pathways from commercially available starting materials to a target molecule. Each step in multi-step retrosynthesis planning requires accurate…

Quantitative Methods · Quantitative Biology 2024-03-27 Ilia Igashov , Arne Schneuing , Marwin Segler , Michael Bronstein , Bruno Correia

Retrosynthetic planning aims to devise a complete multi-step synthetic route from starting materials to a target molecule. Current strategies use a decoupled approach of single-step retrosynthesis models and search algorithms, taking only…

Machine Learning · Computer Science 2023-06-01 Songtao Liu , Zhengkai Tu , Minkai Xu , Zuobai Zhang , Lu Lin , Rex Ying , Jian Tang , Peilin Zhao , Dinghao Wu

Current computer-aided synthesis planning (CASP) methods often treat retrosynthesis as solved once a single feasible route is identified, focusing primarily on convergence or shortest-path metrics. This view is misaligned with real-world…

Artificial Intelligence · Computer Science 2026-05-27 Friedrich Hastedt , Dongda Zhang , Antonio del Rio Chanona

In silico tools are important for generating novel hypotheses and exploring alternatives in de novo metabolic pathway design. However, while many computational frameworks have been proposed for retrobiosynthesis, few successful examples of…

Machine Learning · Computer Science 2026-04-16 Peter Zhiping Zhang , Jeffrey D. Varner

From medicines to materials, small organic molecules are indispensable for human well-being. To plan their syntheses, chemists employ a problem solving technique called retrosynthesis. In retrosynthesis, target molecules are recursively…

Artificial Intelligence · Computer Science 2018-04-17 Marwin H. S. Segler , Mike Preuss , Mark P. Waller

We present an extension of our Molecular Transformer architecture combined with a hyper-graph exploration strategy for automatic retrosynthesis route planning without human intervention. The single-step retrosynthetic model sets a new state…

We describe a fully data driven model that learns to perform a retrosynthetic reaction prediction task, which is treated as a sequence-to-sequence mapping problem. The end-to-end trained model has an encoder-decoder architecture that…

Organic synthesis is one of the key stumbling blocks in medicinal chemistry. A necessary yet unsolved step in planning synthesis is solving the forward problem: given reactants and reagents, predict the products. Similar to other work, we…

Chemical Physics · Physics 2019-09-13 Philippe Schwaller , Teodoro Laino , Théophile Gaudin , Peter Bolgar , Costas Bekas , Alpha A Lee

We present an attention-based Transformer model for automatic retrosynthesis route planning. Our approach starts from reactants prediction of single-step organic reactions for given products, followed by Monte Carlo tree search-based…

Quantitative Methods · Quantitative Biology 2019-06-07 Kangjie Lin , Youjun Xu , Jianfeng Pei , Luhua Lai

Chemical reaction mechanisms are the foundation of how chemists evaluate reactivity and feasibility, yet current Computer-Assisted Synthesis Planning (CASP) systems operate without this mechanistic reasoning. We introduce a computational…

Machine Learning · Computer Science 2026-04-20 Théo A. Neukomm , Zlatko Jončev , Philippe Schwaller

In this paper, we present a novel approach for conformal prediction (CP), in which we aim to identify a set of promising prediction candidates -- in place of a single prediction. This set is guaranteed to contain a correct answer with high…

Machine Learning · Computer Science 2021-02-03 Adam Fisch , Tal Schuster , Tommi Jaakkola , Regina Barzilay

We have developed an end-to-end, retrosynthesis system, named ChemiRise, that can propose complete retrosynthesis routes for organic compounds rapidly and reliably. The system was trained on a processed patent database of over 3 million…

Chemical Physics · Physics 2021-08-11 Xiangyan Sun , Ke Liu , Yuquan Lin , Lingjie Wu , Haoming Xing , Minghong Gao , Ji Liu , Suocheng Tan , Zekun Ni , Qi Han , Junqiu Wu , Jie Fan

Predicting reactants from a specified core product stands as a fundamental challenge within organic synthesis, termed retrosynthesis prediction. Recently, semi-template-based methods and graph-edits-based methods have achieved good…

Quantitative Methods · Quantitative Biology 2024-02-13 Zixun Lan , Binjie Hong , Jiajun Zhu , Zuo Zeng , Zhenfu Liu , Limin Yu , Fei Ma

For a theoretical understanding of the reactivity of complex chemical systems, relative energies of stationary points on potential energy hypersurfaces need to be calculated to high accuracy. Due to the large number of intermediates present…

Chemical Physics · Physics 2018-10-30 Gregor N. Simm , Markus Reiher