Kinetic Analysis of a Cysteine-Derived Thiyl-Catalyzed Asymmetric Vinylcyclopropane Cycloaddition Reflects Numerous Attractive Noncovalent Interactions.
Kinetic Analysis of a Cysteine-Derived Thiyl-Catalyzed Asymmetric Vinylcyclopropane Cycloaddition Reflects Numerous Attractive Noncovalent Interactions.
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DOI:
10.1021/jacs.1c07323
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发表时间:
2021-10-06
影响因子:
15
通讯作者:
Miller SJ
中科院分区:
文献类型:
--
作者:
Turek AK;Sak MH;Miller SJ
Kinetic studies of a vinyl cyclopropane (VCP) cycloaddition, catalyzed by peptide-based thiyl radicals, are described. Reactions were analyzed using reaction progress kinetic analysis, revealing that ring-opening of the VCP is both rate- and enantio-determining. These conclusions are further corroborated by studies involving racemic and enantiopure VCP starting material. Noncovalent interactions play key roles throughout: both the peptide catalyst and VCP exhibit unproductive self-aggregation, which appears to be disrupted by binding between the catalyst and VCP. This in turn explains the requirement for the key catalyst feature, a substituent at the 4-position of the proline residue, which is required for both turnover/rate and selectivity.
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影响因子:
15
作者:
Ford DD;Lehnherr D;Kennedy CR;Jacobsen EN
通讯作者:
Jacobsen EN
DOI:
10.1002/anie.201508983
发表时间:
2016-02-05
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Burés J
通讯作者:
Burés J
影响因子:
16.6
作者:
Bures, Jordi
通讯作者:
Bures, Jordi
影响因子:
15
作者:
Baxter, Ryan D.;Sale, David;Blackmond, Donna G.
通讯作者:
Blackmond, Donna G.
影响因子:
3.9
作者:
KNAPPE, J;ELBERT, S;WAGNER, AFV
通讯作者:
WAGNER, AFV