Thiopeptide Pyridine Synthase TbtD Catalyzes an Intermolecular Formal Aza-Diels–Alder Reaction
作者:Jonathan W. Bogart、Albert A. Bowers
DOI:10.1021/jacs.8b11852
日期:2019.2.6
Thiopeptide pyridine synthases catalyze a multistep reaction involving a unique and nonspontaneous intramolecular aza-[4 + 2] cycloaddition between two dehydroalanines to forge a trisubstituted pyridine core. We discovered that the in vitro activity of pyridine synthases from the thiocillin and thiomuracin pathways are significantly enhanced by general base catalysis and that this broadly expands the
potential γ-turn mimetic), were synthesized, and the structure of 11 was secured by X-ray diffraction analysis of its TFA salt. The aforementioned compounds were prepared in solution and by solid-phasesynthesis. Additionally, we have prepared thioenamino diketopiperazine synthon 16.