Designed For Difficult Biology

Macrocycles are reshaping drug discovery by opening access to targets that have long resisted conventional small-molecule approaches. Their ability to engage large, flat surfaces and modulate complex protein–protein interactions enables exploration of chemical space beyond the traditional Rule-of-5. With strategies centered on conformational control and structure-guided design, macrocycles deliver selective, potent binders against challenging targets such as MCL-1, BCL-2, and viral proteases. Iterative optimization and rapid analoging further refine these candidates into balanced leads with favorable properties. Flexible discovery pathways, ranging from rapid library access to fully customized screening campaigns, allow teams to align macrocycle approaches with specific program goals.

For organizations facing difficult biology, see how macrocycles offer a practical, proven route to uncovering new therapeutic opportunities worth exploring further.