Reversing Erooms Law- Finitude and Dilution in Small-Molecule Discovery
Youngs, R.
Show abstract
Drug discovery productivity--measured as clinically viable new molecules per research has declined for decades, a trend known as Erooms Law. This paradox persists despite advances in screening, computing, and artificial intelligence. Here we show that it stems from two forces: the finite diversity of natures biosynthetic rules, leading to saturation of novel natural scaffolds, and the dilution of viable candidates in expanding synthetic chemical spaces, where success rates fall without improved specificity. We propose an optimized hybrid strategy that allocates effort to mining natural products and using their validated patterns to guide synthetic exploration, maximizing novelty per cost. This approach yields testable rules, such as optimal allocation thresholds and benchmarks for artificial intelligence tools. By embedding natural principles in modern discovery, this framework offers a path to reverse Erooms Law and boost pharmaceutical efficiency.
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