多步骤的回归合成结合了连接断开的三重变压器循环与路线处罚得分的引导树搜索
David Kreutter1, Jean-Louis Reymond1
1Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern Freiestrasse 3 3012 Bern Switzerland david.kreutter@unibe.ch jean-louis.reymond@unibe.ch.
Chemical science
|September 22, 2023
概括
本研究介绍了一个开源的计算机辅助合成计划 (CASP) 工具. 它使用了一种新的三重变压器循环和树搜索算法,为复杂分子提出高效,短的合成路线.
科学领域:
- 有机化学 有机化学
- 计算化学的计算化学
- 人工智能的人工智能
背景情况:
- 计算机辅助合成计划 (CASP) 系统旨在通过从科学文献中学习有机反应性来自动化反合成.
- 现有的CASP系统在准确预测反应断开,避免过拟合和识别最佳合成途径方面面临挑战.
- 开发高效和多功能CASP工具对于加速药物发现和化学合成至关重要.
研究的目的:
- 介绍一个开源的CASP工具,旨在克服当前合成规划方法的局限性.
- 引入用于预测反应断开和优化合成路线选择的新方法.
- 为了证明该工具在为复杂分子生成短且可行的合成路径方面的能力.
主要方法:
- 开发了三重变压器循环 (TTL) 来预测起始材料,试剂和产品,从而可以探索各种断开站点.
- 系统的,基于模板的和基于变压器的标记程序被结合起来来定义断开连接的地点.
- TTL被集成到多步树搜索算法 (TTLA) 中,该算法使用路线惩罚得分 (RPScore) 来优先考虑合成序列.
主要成果:
- 开发的CASP工具成功地提出了现实的断开,并避免了过,允许各种合成选项.
- TTLA有效地优先考虑基于RPScore的合成路线,考虑步数,信心和中间简单性.
- 该方法证明了它能够优化短合成路径到商业上可用的原材料,正如批准药物的回合成分析所显示的那样.
结论:
- 新型CASP工具为自动化逆合成提供了有效的解决方案,解决了反应预测和路线优化的关键挑战.
- 整合TTL和TTLA提供了一个强大的框架,用于发现高效的合成途径.
- 这种开源工具有可能在计算机辅助有机合成领域取得重大进展,并加速化学研究.
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