Programmable flow robot turns a kinase screening hit into a benzodiazepine analogue library
- An automated solid-phase flow platform was built to speed up analogue synthesis after a high-throughput screen, using a benzodiazepine CDK11B hit as the proof of concept.
- Fragment-guided retrosynthesis gave a modular route of roughly ten steps from one resin-bound precursor, with a sterically tuned triazene linker on trityl resin that survives varied conditions and cleaves traceless, allowing late diazonium diversification.
- A recipe-file controller coordinated continuous, circulating and stop-flow modes, delivering dozens of analogues in about two days each and sketching an early structure-activity picture for triage.
💡 Points Based on the abstract
A two-day cycle per analogue is only the bottleneck on a kinase hit if the benzodiazepine core hides real selectivity levers. The traceless triazene handle for late diazonium diversification is the genuinely useful part, since it opens aryl vectors that amide-coupling libraries never reach. Until I see CDK11B selectivity against other CDKs, I'd hold the early SAR loosely.