Development of Spiroligomer–Peptoid Hybrids
2017
Northrup, Justin D. | Mancini, Giulia | Purcell, Claire R. | Schafmeister, Christian E.
Creating functional macromolecules that possess the diversity and functionality of proteins poses an enormous challenge, as this requires large, preorganized macromolecules to facilitate interactions. Peptoids have been shown to interact with proteins, and combinatorial libraries of peptoids have been useful in discovering new ligands for protein binding. We have created spiroligomer–peptoid hybrids that have a spirocyclic core that preorganizes functional groups in three-dimensional space. By utilizing spiroligomers, we can reduce the number of rotatable bonds between functional groups while increasing the stereochemical diversity of the molecules. We have synthesized 15 new spiroligomer monomer amines that contain two stereocenters and three functional groups (67–84% yields from a common hydantoin starting material) as well as a spiroligomer trimer 25 with six stereocenters and five functional groups. These 16 amines were used to synthesize five first-generation spiroligomer–peptoids hybrids.
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