Nickel(0)-catalyzed couplings of vinyl- alanes & - zirconocenes with chloromethylated heteroaromatics: A route to E-allylated heterocycles
摘要:
Treatment of selected chloromethylated heteroaromatics, including pyridines, thiophenes, and furans, with vinyl alanes or vinyl zirconocenes in the presence of Ni(0) results in E-allylated products in good yields. (C) 1998 Elsevier Science Ltd. All rights reserved.
The invention relates to methods for selectively converting a cysteine residue in a peptide or protein to the dehydroalanine (Dha) residue. The method also works on selenocysteine and substituted cysteine and selenocysteine residues, resulting in the Dha residue which may be converted to any natural or unnatural amino acid residue desired without the alteration of the remainder of the peptide or protein. The invention also allows ligation of a desired peptide at any point rather than at a point where there should be a naturally occurring cysteine, thereby allowing native chemical ligation to be used in the synthesis of peptides that do not contain cysteine. The methodology allows for the synthesis of very large peptides.
METHODS FOR THE PREPARATION OF FUNCTIONALIZED PEPTIDES, PROTEINS AND CARBOHYDRATES AND THEIR CONJUGATES
申请人:Crich David
公开号:US20100222546A1
公开(公告)日:2010-09-02
The present invention relates to methods for ligation or derivatization of peptides, amino acids, and carbohydrates utilizing a chalcogen-based reactant, a peptide reactant, an amino acid reactant, a chalcogen-containing peptide reactant, a chalcogen-containing amino acid reactant, or a combination of two or more of the foregoing reactants substantially as described herein.
US9346851B2
申请人:——
公开号:US9346851B2
公开(公告)日:2016-05-24
[EN] METHODS FOR THE PREPARATION OF FUNCTIONALIZED PEPTIDES, PROTEINS AND CARBOHYDRATES AND THEIR CONJUGATES<br/>[FR] PROCÉDÉS DE PRÉPARATION DE PEPTIDES, DE PROTÉINES ET DE GLUCIDES FONCTIONNALISÉS ET DE LEURS CONJUGUÉS
申请人:UNIV ILLINOIS
公开号:WO2008066816A2
公开(公告)日:2008-06-05
[EN] The present invention relates to methods for ligation or derivatization of peptides, amino acids, and carbohydrates utilizing a chalcogen-based reactant, a peptide reactant, an amino acid reactant, a chalcogen-containing peptide reactant, a chalcogen-containing amino acid reactant, or a combination of two or more of the foregoing reactants substantially as described herein. [FR] La présente invention concerne des procédés de ligature ou de dérivatisation de peptides, d'acides aminés et de glucides au moyen d'un réactif à base de chalcogène, d'un réactif peptidique, d'un réactif d'acides aminés, d'un réactif peptidique contenant un chalcogène, d'un réactif d'acides aminés contenant un chalcogène, ou d'une combinaison de deux ou plus des réactifs précédents essentiellement tels que décrits dans ce document.