Direct meta‐C−H Perfluoroalkenylation of Arenes Enabled by a Cleavable Pyrimidine‐Based Template DOI

Massimo Brochetta,

Tania Borsari,

Sukdev Bag

et al.

Chemistry - A European Journal, Journal Year: 2019, Volume and Issue: 25(44), P. 10323 - 10327

Published: June 19, 2019

Abstract The development of efficient and mild methods for the synthesis organofluorine compounds is foremost interest in various fields chemistry. A direct pyrimidine‐based selective meta ‐C−H perfluoroalkenylation arenes involving several commercially available perfluoroolefins described. synthetic versatility protocol demonstrated by an extensive substrate scope including different benzylsulfonyl, alkylarene phenylacetic acid scaffolds. generality this methodology Ibuprofen, facile cleavage directing group gram‐scale reactions are presented.

Language: Английский

Rhodium(III)-Catalyzed C–H Alkenylation: Access to Maleimide-Decorated Tryptophan and Tryptophan-Containing Peptides DOI
Jingjing Peng, Chunpu Li,

Mirzadavlat Khamrakulov

et al.

Organic Letters, Journal Year: 2020, Volume and Issue: 22(4), P. 1535 - 1541

Published: Feb. 3, 2020

Maleimide is widely applied in many fields, especially antibody–drug conjugations and peptide drugs. Herein, we develop a strategy for the C–H alkenylation of tryptophan tryptophan-containing peptides, providing synthetic route decorating maleimide on peptides. The method has high tolerance functional groups protecting groups. Furthermore, this was to prepare conjugation with molecules such as drugs fluorescence probes. Moreover, macrocyclic peptides were obtained via reaction.

Language: Английский

Citations

56

Late-Stage Peptide Modification and Macrocyclization Enabled by Tertiary Amine Catalyzed Tryptophan Allylation DOI Creative Commons
Yuyang Liu, Guofeng Li, Wen Ma

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(28), P. 11099 - 11107

Published: Jan. 1, 2024

An unprecedented tertiary amine catalyzed peptide allylation between Trp and MBH carbonates was disclosed, to enable late-stage functionalization macrocyclization both in traditional homogeneous phase on-resins SPPS.

Language: Английский

Citations

8

Selective Photoredox Trifluoromethylation of Tryptophan‐Containing Peptides DOI

Bo Ding,

Yue Weng, Yunqing Liu

et al.

European Journal of Organic Chemistry, Journal Year: 2019, Volume and Issue: 2019(46), P. 7596 - 7605

Published: Nov. 18, 2019

For application in drug discovery and biomedicine, it is crucial to develop new biocompatible methods modify polypeptides. Herein, a visible‐light‐induced photoredox trifluoromethylation of tryptophan‐containing peptides reported. Under mild, biocompatible, straightforward condition, this strategy could incorporate the trifluoromethyl group into tryptophan residue with excellent chemo‐ site‐selectivity. The use lower photocatalyst loading 2 mol‐% cheap CF 3 SO Na salt represents great catalytic activity economic source. This direct allows ready study fluorinated exploiting 19 F‐NMR. Additionally, development protocol enables biochemical systems potentially modulates function biomolecules. Careful mechanistic studies (Stern‐Volmer fluorescence quenching, EPR, radical inhibition/trapping experiments) indicate that reaction would proceed radical–radical cross‐coupling procedure.

Language: Английский

Citations

48

Chemical modifications of tryptophan residues in peptides and proteins DOI
Jin‐Jian Hu, Pei‐Yang He, Yanmei Li

et al.

Journal of Peptide Science, Journal Year: 2020, Volume and Issue: 27(1)

Published: Sept. 17, 2020

Chemical protein modifications facilitate the investigation of natural posttranslational and allow design proteins with new functions. Proteins can be modified at a late stage on amino acid side chains by chemical methods. The indole moiety tryptophan residues is an emerging target such modification strategies because its unique reactivity low abundance. This review provides overview recently developed methods peptide levels.

Language: Английский

Citations

48

Direct meta‐C−H Perfluoroalkenylation of Arenes Enabled by a Cleavable Pyrimidine‐Based Template DOI

Massimo Brochetta,

Tania Borsari,

Sukdev Bag

et al.

Chemistry - A European Journal, Journal Year: 2019, Volume and Issue: 25(44), P. 10323 - 10327

Published: June 19, 2019

Abstract The development of efficient and mild methods for the synthesis organofluorine compounds is foremost interest in various fields chemistry. A direct pyrimidine‐based selective meta ‐C−H perfluoroalkenylation arenes involving several commercially available perfluoroolefins described. synthetic versatility protocol demonstrated by an extensive substrate scope including different benzylsulfonyl, alkylarene phenylacetic acid scaffolds. generality this methodology Ibuprofen, facile cleavage directing group gram‐scale reactions are presented.

Language: Английский

Citations

46