Aminoalkyl radicals as halogen-atom transfer agents for activation of alkyl and aryl halides
作者:Timothée Constantin、Margherita Zanini、Alessio Regni、Nadeem S. Sheikh、Fabio Juliá、Daniele Leonori
DOI:10.1126/science.aba2419
日期:2020.2.28
Amines as a gateway to alkyl radicals In recent years, photoredox catalysis driven by blue light has often been used to oxidize carbon centers adjacent to nitrogen. Constantin et al. now show that these aminoalkyl radicals can, in turn, conveniently strip iodine atoms from a variety of alkyl carbons. The new alkyl radicals that result readily undergo deuteration and couplings such as alkylation, allylation
Compositions Containing, Methods Involving, and Uses of Non-Natural Amino Acids and Polypeptides
申请人:Miao Zhenwei
公开号:US20090240029A1
公开(公告)日:2009-09-24
Disclosed herein are non-natural amino acids and polypeptides that include at least one non-natural amino acid, and methods for making such non-natural amino acids and polypeptides. The non-natural amino acids, by themselves or as a part of a polypeptide, can include a wide range of possible functionalities, but typical have at least one heterocycle, aldol-based, dicarbonyl, and/or diamine group. Also disclosed herein are non-natural amino acid polypeptides that are further modified post-translationally, methods for effecting such modifications, and methods for purifying such polypeptides. Typically, the modified non-natural amino acid polypeptides include at least one heterocycle, aldol-based, dicarbonyl, and/or diamine group. Further disclosed are methods for using such non-natural amino acid polypeptides and modified non-natural amino acid polypeptides, including therapeutic, diagnostic, and other biotechnology uses.
Compositions containing, methods involving, and uses of non-natural amino acids and polypeptides
申请人:Ambrx, Inc.
公开号:EP2399893A2
公开(公告)日:2011-12-28
Disclosed herein are non-natural amino acids and polypeptides that include at least one non-natural amino acid, and methods for making such non-natural amino acids and polypeptides. The non-natural amino acids, by themselves or as a part of a polypeptide, can include a wide range of possible functionalities, but typical have at least one oxime, carbonyl, dicarbonyl, and/or hydroxylamine group. Also disclosed herein are non-natural amino acid polypeptides that are further modified post-translationally, methods for effecting such modifications, and methods for purifying such polypeptides. Typically, the modified non-natural amino acid polypeptides include at least one oximine, carbonyl, dicarbonyl, and/or hydroxylamine group. Further disclosed are methods for using such non-natural amino acid polypeptides and modified non-natural amino acid polypeptides, including therapeutic, diagnostic, and other biotechnology uses.