A Modular Synthesis of Teraryl‐Based α‐Helix Mimetics, Part 4: Core Fragments with Two Halide Leaving Groups Featuring Side Chains of Proteinogenic Amino Acids
A series of para-bromoiodoarene compounds decorated with the sidechains of all proteinogenic amino acids is reported. These fragments serve as building blocks for the modular assembly of teraryl-based α-helix mimetics via sequential Pd cross-coupling. Compared to our established iodotriflate approach, the new building blocks showed higher stability and better reactivity under cross-coupling conditions
A Modular Synthesis of Teraryl‐Based α‐Helix Mimetics, Part 5: A Complete Set of Pyridine Boronic Acid Pinacol Esters Featuring Side Chains of Proteinogenic Amino Acids
A set of 5-substituted 3-pyridine boronic acidpinacolesters decorated with the side chains of all proteinogenic amino acids relevant in protein-protein interactions is reported. This work completes our efforts towards a library of building blocks for the modular assembly of teraryl-based α-helix mimetics via sequential Pd cross-coupling.
Improved and scalable synthesis of building blocks for the modular synthesis of teraryl-based alpha-helix mimetics
作者:Melanie Trobe、Rolf Breinbauer
DOI:10.1007/s00706-015-1599-0
日期:2016.3
AbstractThe modularsynthesis of teraryl-based alpha-helix mimetics can be accomplished by sequential Suzuki-couplings of arylboronic acid building blocks with 4-iodophenyltriflate core-fragments. We report about new synthetic accesses to core fragments featuring the side chains of Leu, Lys, Cys, Glu, Gln, Ser, and Thr starting from simple phenol precursors. Graphical abstract