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Issue 1, 2020
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Datasets and their influence on the development of computer assisted synthesis planning tools in the pharmaceutical domain

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Abstract

Computer Assisted Synthesis Planning (CASP) has gained considerable interest as of late. Herein we investigate a template-based retrosynthetic planning tool, trained on a variety of datasets consisting of up to 17.5 million reactions. We demonstrate that models trained on datasets such as internal Electronic Laboratory Notebooks (ELN), and the publicly available United States Patent Office (USPTO) extracts, are sufficient for the prediction of full synthetic routes to compounds of interest in medicinal chemistry. As such we have assessed the models on 1731 compounds from 41 virtual libraries for which experimental results were known. Furthermore, we show that accuracy is a misleading metric for assessment of the policy network, and propose that the number of successfully applied templates, in conjunction with the overall ability to generate full synthetic routes be examined instead. To this end we found that the specificity of the templates comes at the cost of generalizability, and overall model performance. This is supplemented by a comparison of the underlying datasets and their corresponding models.

Graphical abstract: Datasets and their influence on the development of computer assisted synthesis planning tools in the pharmaceutical domain

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Supplementary files

Article information


Submitted
01 Oct 2019
Accepted
05 Nov 2019
First published
05 Nov 2019

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2020,11, 154-168
Article type
Edge Article

Datasets and their influence on the development of computer assisted synthesis planning tools in the pharmaceutical domain

A. Thakkar, T. Kogej, J. Reymond, O. Engkvist and E. J. Bjerrum, Chem. Sci., 2020, 11, 154
DOI: 10.1039/C9SC04944D

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