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Retrosynthesis is a technique to plan the chemical synthesis of organic molecules, for example drugs, agro- and fine chemicals. In retrosynthesis, a search tree is built by analysing molecules recursively and dissecting them into simpler…

Artificial Intelligence · Computer Science 2017-02-02 Marwin Segler , Mike Preuß , Mark P. Waller

Retrosynthetic planning, which aims to find a reaction pathway to synthesize a target molecule, plays an important role in chemistry and drug discovery. This task is usually modeled as a search problem. Recently, data-driven methods have…

Artificial Intelligence · Computer Science 2022-06-24 Shufang Xie , Rui Yan , Peng Han , Yingce Xia , Lijun Wu , Chenjuan Guo , Bin Yang , Tao Qin

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

Retrosynthesis consists of breaking down a chemical compound recursively step-by-step into molecular precursors until a set of commercially available molecules is found with the goal to provide a synthesis route. Its two primary research…

Artificial Intelligence · Computer Science 2024-03-12 Paula Torren-Peraire , Alan Kai Hassen , Samuel Genheden , Jonas Verhoeven , Djork-Arne Clevert , Mike Preuss , Igor Tetko

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

Retrosynthesis, which aims to find a route to synthesize a target molecule from commercially available starting materials, is a critical task in drug discovery and materials design. Recently, the combination of ML-based single-step reaction…

Artificial Intelligence · Computer Science 2024-03-05 Guoqing Liu , Di Xue , Shufang Xie , Yingce Xia , Austin Tripp , Krzysztof Maziarz , Marwin Segler , Tao Qin , Zongzhang Zhang , Tie-Yan Liu

Retrosynthetic planning is a fundamental problem in chemistry for finding a pathway of reactions to synthesize a target molecule. Recently, search algorithms have shown promising results for solving this problem by using deep neural…

Machine Learning · Computer Science 2021-06-10 Junsu Kim , Sungsoo Ahn , Hankook Lee , Jinwoo Shin

Retrosynthesis is the task of breaking down a chemical compound recursively step-by-step into molecular precursors until a set of commercially available molecules is found. Consequently, the goal is to provide a valid synthesis route for a…

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

Synthesis planning is the process of recursively decomposing target molecules into available precursors. Computer-aided retrosynthesis can potentially assist chemists in designing synthetic routes, but at present it is cumbersome and…

Chemical Physics · Physics 2019-07-04 Shuangjia Zheng , Jiahua Rao , Zhongyue Zhang , Jun Xu , Yuedong Yang

Retrosynthetic planning is a critical task in organic chemistry which identifies a series of reactions that can lead to the synthesis of a target product. The vast number of possible chemical transformations makes the size of the search…

Machine Learning · Computer Science 2020-06-30 Binghong Chen , Chengtao Li , Hanjun Dai , Le Song

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 retrosynthetic planning, the huge number of possible routes to synthesize a complex molecule using simple building blocks leads to a combinatorial explosion of possibilities. Even experienced chemists often have difficulty to select the…

Artificial Intelligence · Computer Science 2023-06-13 Siqi Hong , Hankz Hankui Zhuo , Kebing Jin , Guang Shao , Zhanwen Zhou

The problem of retrosynthetic planning can be framed as one player game, in which the chemist (or a computer program) works backwards from a molecular target to simpler starting materials though a series of choices regarding which reactions…

Machine Learning · Computer Science 2019-01-23 John S. Schreck , Connor W. Coley , Kyle J. M. Bishop

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

Molecular retrosynthesis is a significant and complex problem in the field of chemistry, however, traditional manual synthesis methods not only need well-trained experts but also are time-consuming. With the development of big data and…

Artificial Intelligence · Computer Science 2024-07-16 Yan Zhang , Hao Hao , Xiao He , Shuanhu Gao , Aimin Zhou

Retrosynthesis, which aims to identify viable synthetic pathways for target molecules by decomposing them into simpler precursors, is often treated as a search problem. However, its complexity arises from multi-branched tree-structured…

Artificial Intelligence · Computer Science 2025-11-25 Chengyang Tian , Yuhang Chang , Yangpeng Zhang , Yang Liu

Interpretability of reinforcement learning policies is essential for many real-world tasks but learning such interpretable policies is a hard problem. Particularly rule-based policies such as decision trees and rules lists are difficult to…

Artificial Intelligence · Computer Science 2024-02-15 Daniël Vos , Sicco Verwer

Molecular design and synthesis planning are two critical steps in the process of molecular discovery that we propose to formulate as a single shared task of conditional synthetic pathway generation. We report an amortized approach to…

Machine Learning · Computer Science 2022-03-15 Wenhao Gao , Rocío Mercado , Connor W. Coley

Retrosynthesis strategically plans the synthesis of a chemical target compound from simpler, readily available precursor compounds. This process is critical for synthesizing novel inorganic materials, yet traditional methods in inorganic…

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