Tetramethylammonium Fluoride Alcohol Adducts for S<sub>N</sub>Ar Fluorination
作者:María T. Morales-Colón、Yi Yang See、So Jeong Lee、Peter J. H. Scott、Douglas C. Bland、Melanie S. Sanford
DOI:10.1021/acs.orglett.1c01490
日期:2021.6.4
aprotic conditions to maintain the nucleophilicity of fluoride and suppress the generation of side products. This report addresses this challenge by leveraging tetramethylammonium fluoride alcohol adducts (Me4NF·ROH) as fluoride sources for SNAr fluorination. Through systematic tuning of the alcohol substituent (R), tetramethylammonium fluoride tert-amyl alcohol (Me4NF·t-AmylOH) was identified as an
亲核芳族氟化 (S N Ar) 是形成 C(sp 2 )-F 键的最常用方法之一。尽管最近取得了许多进展,但这些转化的长期限制是需要严格干燥的非质子条件来保持氟化物的亲核性并抑制副产物的产生。本报告通过利用四甲基氟化铵醇加合物 (Me 4 NF·ROH) 作为 S N Ar 氟化的氟化物来源解决了这一挑战。通过系统调整醇取代基 (R),四甲基氟化铵叔戊醇 (Me 4 NF· t-AmylOH) 被确定为在温和方便的条件下(DMSO 中 80°C,无需干燥试剂或溶剂)下用于 S N Ar 氟化的廉价、实用且台式稳定的试剂。展示了超过 50 种(杂)芳基卤化物和硝基芳烃亲电子试剂的底物范围。
[EN] TUNABLE PROBES FOR SELECTIVE PROTEIN LABELLING AND ENZYME INHIBITION<br/>[FR] SONDES ACCORDABLES POUR MARQUAGE SÉLECTIF DE PROTÉINES ET INHIBITION ENZYMATIQUE
申请人:AAA CHEMISTRY APS
公开号:WO2018234483A1
公开(公告)日:2018-12-27
The present invention relates to methods of selectively reacting a compound of Formula (I) with a cysteine residue, which is contained in the sequence of a polypeptide. The methods may be employed in the fields of labelling polypeptides, detecting polypeptides, modulation of enzyme activity, isolation of polypeptides, methods of diagnostics, methods of prevention or treatment of clinical conditions or methods of transportation of compounds e.g. prodrugs.
Rational Tuning of Fluorobenzene Probes for Cysteine‐Selective Protein Modification
作者:Ahmed M. Embaby、Sanne Schoffelen、Christian Kofoed、Morten Meldal、Frederik Diness
DOI:10.1002/anie.201712589
日期:2018.7.2
selective cysteine labeling have been developed by rational reactivity tuning. Tuning was achieved by selecting an electron‐withdrawing para substituent in combination with variation of the number of fluorine substituents. Optimized probes chemoselectively arylated cysteine residues in proteins under aqueous conditions. Probes linked to azide, biotin, or a fluorophore were applicable to labeling of eGFP and