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Investigation of the incidence of "undesirable" molecular moieties for high-throughput screening compound libraries in marketed drug compounds
© Axerio-Cilies et al; licensee BioMed Central Ltd. 2009
Published: 05 June 2009
A database of 1070 marketed drug compounds was compiled and analyzed in order to assess the occurrence of moieties described in the literature as "undesirable" for high-throughput screening compound libraries due to their ability to perturb assay formats . The study revealed a total of 277 compounds, 26% of the database, contained at least one of the moieties. As some of the drug compounds contained more than one "undesirable" moiety, the total number was 352. Electrophilic reactive groups, particularly aliphatic esters, were the most abundant type with 55% of the total. Half of the drug compounds incorporating the "undesirable" moieties were synthetic organic molecules. These findings suggest that "undesirable" moieties do not pose a major hindrance during clinical trials, the most expensive phase of drug development. In addition, their early elimination in the preclinical stage excludes large regions of known drug space due to the reliance on biochemical and cell-based assays. In general, it can be concluded that compounds with "undesirable" moieties should not simply be eliminated from compound screening libraries but rather flagged as potentially problematic. A possible solution is to segregate the compounds containing suspect moieties and screen them when deemed appropriate.
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