3695-77-0Relevant articles and documents
Sulfenyl chloride chemistry, sulfur transfer to double bonds
Abu-Yousef,Hynes,Harpp
, p. 4289 - 4292 (1993)
When triphenylmethanesulfenyl chloride (1) (or its thio homolog 2) are treated with various bicycles, 1,2 addition reactions take place. Final products occur via an episulfide intermediate. The stereochemistry of addition has been determined by x-ray analysis. Finally, evidence has been obtained for the delivery of diatomic sulfur, likely via intermediate 3.
Immobilization by Surface Conjugation of Cyclic Peptides for Effective Mimicry of the HCV-Envelope E2 Protein as a Strategy toward Synthetic Vaccines
Meuleman, Theodorus J.,Dunlop, James I.,Owsianka, Anna M.,Van De Langemheen, Helmus,Patel, Arvind H.,Liskamp, Rob M. J.
, p. 1091 - 1101 (2018)
Mimicry of the binding interface of antibody-antigen interactions using peptide-based modulators (i.e., epitope mimics) has promising applications for vaccine design. These epitope mimics can be synthesized in a streamlined and straightforward fashion, thereby allowing for high-throughput analysis. The design of epitope mimics is highly influenced by their spatial configuration and structural conformation. It is widely assumed that for proper mimicry sufficient conformational constraints have to be implemented. This paper describes the synthesis of bromide derivatives functionalized with a flexible TEG linker equipped with a thiol-moiety that could be used to support cyclic or linear peptides. The cyclic and linear epitope mimics were covalently conjugated via the free thiol-moiety on maleimide-activated plate surfaces. The resulting covalent, uniform, and oriented coated surface of cyclic or linear epitope mimics were subjected to an ELISA to investigate the effect of peptide cyclization with respect to mimicry of an antigen-antibody interaction of the HCV E2 glycoprotein. To the best of our knowledge, the benefit of cyclized peptides over linear peptides has been clearly demonstrated here for the first time. Cyclic epitope mimics, and not the linear epitope mimics, demonstrated specificity toward their monoclonal antibodies HC84.1 and V3.2, respectively. The described strategy for the construction of epitope mimics shows potential for high-throughput screening of key binding residues by simply changing the amino acid sequences within synthetic peptides. In this way, leucine-438 has been identified as a key binding residue for binding monoclonal antibody V3.2.
A mild and selective protecting and reversed modification of thiols
Li, Xiangmin,Li, Hongxian,Yang, Wei,Zhuang, Jinchen,Li, Hao,Wang, Wei
supporting information, p. 2660 - 2663 (2016/06/01)
One selective thiol-protecting study has been investigated for a wide range of thiols including general thiols and thiols containing multiple functional groups. The reactions of bromomaleimides and thiols under the mild condition afforded the protected products in excellent yields. The thiols can be recovered very quickly using dithiothreitol (DTT) under the mild condition.
