Efficient Discovery of Inhibitory Ligands for Diverse Targets from a Small Combinatorial Chemical Library of Chimeric Molecules
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS(1999)
Abstract
Living systems are mainly composed and regulated by compounds in four biochemical classes and their polymers-nucleotides, carbohydrates, lipids, and amino acids. Early combinatorial chemistry libraries consisted of peptides. The present report describes the general bioactivity and biophysical properties of a combinatorial chemical library that used glyco, nucleotidyl, and lipid building blocks. The resulting chimeric combinatorial library of 361 compounds had a confirmed cumulative hit rate of 0.16%, which is 8-fold higher than a commonly claimed industrial benchmark of 0.02%. It produced 7 structurally confirmed hits for a third of 12 proprietary drug discovery projects, and these comprised a variety of molecular targets. Diversity analyses demonstrated that despite the small number of compounds, a wider range of diversity space was covered by this library of biochemical chimeras than by a branched tripeptide library of the same size and similar generic formula. (C) 1999 Academic Press.
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Key words
combinatorial chemistry,drug discovery,amino acid,cumulant,receptor,nucleotides
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