Journal of the American Chemical Society, volume 139, issue 11, pages 3942-3945

Quantifying Possible Routes for SpnF-Catalyzed Formal Diels–Alder Cycloaddition

Zeifman Alexey A 2
Novikov Fedor 2, 3
Stroganov Oleg V 2, 3
Titov Ilya Yu 2, 3
Chilov Ghermes G 2, 3
Svitanko Igor V 2
Publication typeJournal Article
Publication date2017-03-07
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor15
ISSN00027863, 15205126
General Chemistry
Catalysis
Biochemistry
Colloid and Surface Chemistry
Abstract
The Diels-Alder reaction is a cornerstone of modern organic synthesis. Despite this, it remains essentially inaccessible to biosynthetic approaches. Only a few natural enzymes catalyze even a formal [4 + 2] cycloaddition, and it remains uncertain if any of them proceed via the Diels-Alder mechanism. In this study, we focus on the [4 + 2] cycloaddition step in the biosynthesis of spinosyn A, a reaction catalyzed by SpnF enzyme, one of the most promising "true Diels-Alderase" candidates. The four currently proposed mechanisms (including the Diels-Alder one) for this reaction in water (as a first-order approximation of the enzymatic reaction) are evaluated by an exhaustive quantum mechanical search for possible transition states (728 were found in total). We find that the line between the recently proposed bis-pericyclic [J. Am. Chem. Soc. 2016, 138 (11), 3631] and Diels-Alder routes is blurred, and favorable transition states of both types may coexist. Application of the Curtin-Hammett principle, however, reveals that the bis-pericyclic mechanism accounts for ∼83% of the reaction flow in water, while the classical Diels-Alder mechanism contributes only ∼17%. The current findings provide a route for modeling this reaction inside the SpnF active site and inferring the catalytic architecture of possible Diels-Alderases.

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Medvedev M. G. et al. Quantifying Possible Routes for SpnF-Catalyzed Formal Diels–Alder Cycloaddition // Journal of the American Chemical Society. 2017. Vol. 139. No. 11. pp. 3942-3945.
GOST all authors (up to 50) Copy
Medvedev M. G., Zeifman A. A., Novikov F., Bushmarinov I. S., Stroganov O. V., Titov I. Yu., Chilov G. G., Svitanko I. V. Quantifying Possible Routes for SpnF-Catalyzed Formal Diels–Alder Cycloaddition // Journal of the American Chemical Society. 2017. Vol. 139. No. 11. pp. 3942-3945.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/jacs.6b13243
UR - https://doi.org/10.1021%2Fjacs.6b13243
TI - Quantifying Possible Routes for SpnF-Catalyzed Formal Diels–Alder Cycloaddition
T2 - Journal of the American Chemical Society
AU - Zeifman, Alexey A
AU - Chilov, Ghermes G
AU - Medvedev, Michael G.
AU - Bushmarinov, I. S.
AU - Novikov, Fedor
AU - Stroganov, Oleg V
AU - Titov, Ilya Yu
AU - Svitanko, Igor V
PY - 2017
DA - 2017/03/07 00:00:00
PB - American Chemical Society (ACS)
SP - 3942-3945
IS - 11
VL - 139
SN - 0002-7863
SN - 1520-5126
ER -
BibTex |
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BibTex Copy
@article{2017_Medvedev,
author = {Alexey A Zeifman and Ghermes G Chilov and Michael G. Medvedev and I. S. Bushmarinov and Fedor Novikov and Oleg V Stroganov and Ilya Yu Titov and Igor V Svitanko},
title = {Quantifying Possible Routes for SpnF-Catalyzed Formal Diels–Alder Cycloaddition},
journal = {Journal of the American Chemical Society},
year = {2017},
volume = {139},
publisher = {American Chemical Society (ACS)},
month = {mar},
url = {https://doi.org/10.1021%2Fjacs.6b13243},
number = {11},
pages = {3942--3945},
doi = {10.1021/jacs.6b13243}
}
MLA
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MLA Copy
Medvedev, Michael G., et al. “Quantifying Possible Routes for SpnF-Catalyzed Formal Diels–Alder Cycloaddition.” Journal of the American Chemical Society, vol. 139, no. 11, Mar. 2017, pp. 3942-3945. https://doi.org/10.1021%2Fjacs.6b13243.
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