bi0c00289_si_001.pdf (2.71 MB)
Alternative Reactivity of Leucine 5‑Hydroxylase Using an Olefin-Containing Substrate to Construct a Substituted Piperidine Ring
journal contribution
posted on 2020-05-18, 18:34 authored by Lide Cha, Sergey Milikisiyants, Madison Davidson, Shan Xue, Tatyana Smirnova, Alex Smirnov, Yisong Guo, Wei-chen ChangApplying
enzymatic reactions to produce useful molecules is a central
focus of chemical biology. Iron and 2-oxoglutarate (Fe/2OG) enzymes
are found in all kingdoms of life and catalyze a broad array of oxidative
transformations. Herein, we demonstrate that the activity of an Fe/2OG
enzyme can be redirected when changing the targeted carbon hybridization
from sp3 to sp2. During leucine 5-hydroxylase
catalysis, installation of an olefin group onto the substrate redirects
the Fe(IV)–oxo species reactivity from hydroxylation to asymmetric
epoxidation. The resulting epoxide subsequently undergoes intramolecular
cyclization to form the substituted piperidine, 2S,5S-hydroxypipecolic acid.