General Access to Modified α-Amino Acids by Bioinspired Stereoselective γ-C-H Bond Lactonization.

Angewandte Chemie
Laia VicensMiquel Costas

Abstract

α-Amino acids represent a valuable class of natural products employed as building blocks in biological and chemical synthesis. Because of the limited number of natural amino acids available, and of their widespread application in proteomics, diagnosis, drug delivery and catalysis, there is an increasing demand for the development of procedures for the preparation of modified analogues. Herein, we show that the use of bioinspired manganese catalysts and H2 O2 under mild conditions, provides access to modified α-amino acids via γ-C-H bond lactonization. The system can efficiently target 1°, 2° and 3° γ-C-H bonds of α-substituted and achiral α,α-disubstituted α-amino acids with outstanding site-selectivity, good to excellent diastereoselectivity and (where applicable) enantioselectivity. This methodology may be considered alternative to well-established organometallic procedures.

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Citations

Oct 6, 2021·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Miquel Costas
Nov 12, 2021·Angewandte Chemie·Lukas Anton WeinThomas Magauer

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