Based on the premise that, for a given class of related chemical compounds, there exists a relationship between their structure and their properties (i.e. activity), it is demonstrated herein that an elementary algorithm can readily identify, with simplistic models and without recourse
to molecular descriptors, the most active compounds of a categorical, pre-defined space of molecules. In an actual case study using public experimental data on two thousand related molecules, D-optimal design of experiments initially identified the best subset of compounds considered for the
construction of simple models. Subsequently, predictions of a first generation of best candidates, their preparation and inclusion into a new data set, allowed the exploration of the most active region within the space of interest. Survival of the algorithm by iterative generations ensured
that most of the best (active) compounds had been prepared. A certain partial survival condition, followed by a complete termination criterion, helped to minimize the total amount of compounds to prepare while identifying the n best individuals of the matrix.
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DESIGN OF EXPERIMENTS;
Document Type: Research Article
Syngenta Crop Protection Münchwilen AG, Schaffhauserstrasse CH-4332 Stein, Switzerland. [email protected]
Syngenta Crop Protection Münchwilen AG, Schaffhauserstrasse CH-4332 Stein, Switzerland
February 1, 2013
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International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions
CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.
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