Abstract
Design strategies that can access natural-product-like chemical space in an efficient manner may facilitate the discovery of biologically relevant compounds. We have employed a divergent intermediate strategy to construct an indole alkaloid-inspired compound collection derived from two different molecular design principles, i.e. biology-oriented synthesis and pseudo-natural products. The divergent intermediate was subjected to acid-catalyzed or newly discovered Sn-mediated conditions to selectively promote intramolecular C- or N-acylation, respectively. After further derivatization, a collection totalling 84 compounds representing four classes was obtained. Morphological profiling via the cell painting assay coupled with a subprofile analysis showed that compounds derived from different design principles have different bioactivity profiles. The subprofile analysis suggested that a pseudo-natural product class is enriched in modulators of tubulin, and subsequent assays led to the identification of compounds that suppress in vitro tubulin polymerization and mitotic progression.
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