Abstract

The previously neglected "angular" spirocyclic azetidines have been synthesized, characterized, and validated in drug discovery. We have shown that these compounds could act as bioisosteres for common saturated six-membered heterocycles. Their incorporation into the structure of the anticancer drug Sonidegib (instead of morpholine), and Danofloxacine (instead of piperazine) provided novel patent-free analogs with similar physicochemical properties and high activity.

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