Build-Couple-Transform: A Paradigm for Lead-like Library Synthesis with Scaffold Diversity.
Uguen, M., Davison, G., Sprenger, L.J., Hunter, J.H., Martin, M.P., Turberville, S., Watt, J.E., Golding, B.T., Noble, M.E.M., Stewart, H.L., Waring, M.J.(2022) J Med Chem 65: 11322-11339
- PubMed: 35943172 
- DOI: https://doi.org/10.1021/acs.jmedchem.2c00897
- Primary Citation of Related Structures:  
7ZPC - PubMed Abstract: 
High-throughput screening provides one of the most common ways of finding hit compounds. Lead-like libraries, in particular, provide hits with compatible functional groups and vectors for structural elaboration and physical properties suitable for optimization. Library synthesis approaches can lead to a lack of chemical diversity because they employ parallel derivatization of common building blocks using single reaction types. We address this problem through a "build-couple-transform" paradigm for the generation of lead-like libraries with scaffold diversity. Nineteen transformations of a 4-oxo-2-butenamide scaffold template were optimized, including 1,4-cyclizations, 3,4-cyclizations, reductions, and 1,4-additions. A pool-transformation approach efficiently explored the scope of these transformations for nine different building blocks and synthesized a >170-member library with enhanced chemical space coverage and favorable drug-like properties. Screening revealed hits against CDK2. This work establishes the build-couple-transform concept for the synthesis of lead-like libraries and provides a differentiated approach to libraries with significantly enhanced scaffold diversity.
Organizational Affiliation: 
Cancer Research UK Newcastle Drug Discovery Unit, Newcastle University Centre for Cancer, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne NE1 7RU, U.K.