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Volumn 48, Issue 11, 2008, Pages 2180-2195

Virtual screening for R-groups, including predicted pIC50 contributions, within large structural databases, using topomer CoMFA

Author keywords

[No Author keywords available]

Indexed keywords

DATABASE SYSTEMS; FORECASTING; MOLECULAR GRAPHICS;

EID: 57649100158     PISSN: 15499596     EISSN: 1549960X     Source Type: Journal    
DOI: 10.1021/ci8001556     Document Type: Article
Times cited : (62)

References (40)
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    • In order to provide at least a very rough and preliminary estimate of this important baseline value, we calculated the standard deviation of pIC50s for the primary biological assay reported within 23 recent Journal of Medicinal Chemistry articles, limited to those from commercial organizations that mentioned a potential clinical candidate. The average value of these 23 pIC50 standard deviations was 0.89, with a standard deviation of 0.43. Not surprisingly, it was also apparent that in the majority of these publications the lead optimization goal in preparing and testing the most reported structures was no longer to improve potency in the primary assay but to maintain that potency while improving secondary properties. However such an activity will tend to depress the cumulative pIC50 standard deviation for the primary assay. So on balance we postulate a value somewhere between 1.0 and 1.3 for the standard deviation of any pIC50 that a project is actively seeking to improve
    • In order to provide at least a very rough and preliminary estimate of this important baseline value, we calculated the standard deviation of pIC50s for the primary biological assay reported within 23 recent Journal of Medicinal Chemistry articles, limited to those from commercial organizations that mentioned a potential clinical candidate. The average value of these 23 pIC50 standard deviations was 0.89, with a standard deviation of 0.43. Not surprisingly, it was also apparent that in the majority of these publications the lead optimization goal in preparing and testing the most reported structures was no longer to improve potency in the primary assay but to maintain that potency while improving secondary properties. However such an activity will tend to depress the cumulative pIC50 standard deviation for the primary assay. So on balance we postulate a value somewhere between 1.0 and 1.3 for the standard deviation of any pIC50 that a project is actively seeking to improve.
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