Biocatalytic Enantioselective ß-Hydroxylation of Unactivated C-H Bonds in Aliphatic Carboxylic Acids.
Angew Chem Int Ed Engl
; 61(28): e202204290, 2022 07 11.
Article
em En
| MEDLINE
| ID: mdl-35536725
ABSTRACT
Catalytic selective hydroxylation of unactivated aliphatic (sp3 ) C-H bonds without a directing group represents a formidable task for synthetic chemists. Through directed evolution of P450BSß hydroxylase, we realize oxyfunctionalization of unactivated C-H bonds in a broad spectrum of aliphatic carboxylic acids with varied chain lengths, functional groups and (hetero-)aromatic moieties in a highly chemo-, regio- and enantioselective fashion (>30 examples, Cß/Cα>20 1, >99 % ee). The X-ray structure of the evolved variant, P450BSß -L78I/Q85H/G290I, in complex with palmitic acid well rationalizes the experimentally observed regio- and enantioselectivity, and also reveals a reduced catalytic pocket volume that accounts for the increased reactivity with smaller substrates. This work showcases the potential of employing a biocatalyst to enable a chemical transformation that is particularly challenging by chemical methods.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ácidos Carboxílicos
/
Sistema Enzimático do Citocromo P-450
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article