The Cover Feature shows a metal-free, N-doped carbon-mediated sustainable catalytic route for selective reductive formylation of quinoline to N-formyl-tetrahydroquinoline and nitroarenes N-formyl anilides via aqueous formic acid mediated transformation. boat (built with chitosan derived from crabs) represents the chitosan-derived carbon catalyst sailing in water containing acid. More informatio...

Maternally transmitted factor (Mtf) is a mitochondrial gene that controls the antigenic polymorphism of the MHC class I maternally transmitted antigen (Mta). Synthetic peptides from the NH2 terminus of the mitochondrially encoded NADH dehydrogenase subunit 1 (ND1) mimic Mtf peptide activity in an allele-specific manner. We show that the minimal ND1-alpha peptide length recognized by Mtaa-specif...

A series of crown ethers, 12-crown-4, 15-crown-5, 18-crown-6, and dibenzo-30-crown-10, are examined as a possible means of shifting the mobilities of peptide ions. In this approach, a crown ether is added to a solution containing a mixture of peptides and is electrosprayed into the gas phase in order to create distributions of peptide-crown complexes. The ion complexes have different mobilities...

It was demonstrated that various threaded structures could be constructed by employing different esters as end groups based on the benzo-21-crown-7/secondary ammonium salt recognition motif. The chemical structures of all synthesized compounds were confirmed by (1)H and (13)C NMR spectroscopy as well as mass spectrometry. Single crystal X-ray analysis revealed that all compounds are threaded st...

INTRODUCTION Nature has produced the most selective and efficient catalysts known, often in the form of enzymes having well defined structures to direct substrate recognition and subsequent catalysis of chemical transformations. These capabilities have inspired multiple research efforts focused on the development of supramolecular assemblies that mimic enzymes by serving as templates for chemic...

The title 22-crown-6 unit, C(26)H(28)O(6), comprising of three benzo groups and triethyl-ene glycol, was prepared by the reaction of α,α'-dibromo-p-xylene with 1,8-bis-(2-hydroxy-phen-oxy)-3,6-dioxaoctane in the presence of Cs(2)CO(3) with tetra-hydro-furan (THF) and recrystallized from dichloro-methane-hexane (1:20 v/v) at room temperature. In the mol-ecular structure, two O atoms of the centr...