Synthesis and Isolation of 5,6-Dihydro-4H-1,3-Oxazine Hydrobromides by Autocyclization of N-(3-Bromopropyl)amides
摘要:
5,6-Dihydro-4H-1,3-oxazine hydrobromides have been synthesized by the nucleophilic autocyclo-O-alkylation of N-(3-bromopropyl)amides under neutral conditions in chloroform. It is found that electron-donating amide alpha-substituents influence the autocyclization efficiency.
Accessing the disallowed conformations of peptides employing amide-to-imidate modification
作者:Damodara N. Reddy、Ravula Thirupathi、Erode N. Prabhakaran
DOI:10.1039/c1cc13515e
日期:——
Selective modification of the C-terminal amide in peptides to dihydrooxazine (a novel stable imidate isostere) by intramolecular nucleophilic cyclo-O-alkylation of the corresponding N-(3-bromopropyl)amides results in constraining of the C-terminal residue in natively disallowed conformations both in crystals and in solution.
Synthesis and Isolation of 5,6-Dihydro-4<i>H</i>-1,3-Oxazine Hydrobromides by Autocyclization of <i>N</i>-(3-Bromopropyl)amides
作者:Damodara N. Reddy、Erode N. Prabhakaran
DOI:10.1021/jo101955q
日期:2011.1.21
5,6-Dihydro-4H-1,3-oxazine hydrobromides have been synthesized by the nucleophilic autocyclo-O-alkylation of N-(3-bromopropyl)amides under neutral conditions in chloroform. It is found that electron-donating amide alpha-substituents influence the autocyclization efficiency.
Expedient Synthesis of Ubiquitin‐like Protein ISG15 Tools through Chemo‐Enzymatic Ligation Catalyzed by a Viral Protease Lb
<sup>pro</sup>
A protease (Lbpro) from foot-and-mouth disease virus can ligate synthetic glycyl compounds to ISG15 (interferon-stimulated gene 15), generating various ISG15proteintools for cellular proteomic studies, as well as screening and evaluation of small molecules against SARS-CoV-2 papain-like protease (PLpro). This strategy can also synthesize ISG15-modified peptide and Ub (ubiquitin)/NEDD8 (ubiquitin-like