Rationally designed squaryldiamides – a novel class of sugar-nucleotide mimics?
作者:Sven Niewiadomski、Zeenat Beebeejaun、Helen Denton、Terry K. Smith、Richard J. Morris、Gerd K. Wagner
DOI:10.1039/c004165c
日期:——
for the diphosphate group, with the ability to coordinate to a divalent metal, is therefore an important design criteria for the development of sugar-nucleotide mimics. Here, we describe the rational design and synthesis of a novel class of sugar-nucleotide mimics based on a squaryldiamide scaffold, an uncharged phosphate isostere. We demonstrate by comprehensive NMR titration experiments that the new
Kinetic Analysis and Mechanism of the Hydrolytic Degradation of Squaramides and Squaramic Acids
作者:Marta Ximenis、Emilio Bustelo、Andrés G. Algarra、Manel Vega、Carmen Rotger、Manuel G. Basallote、Antonio Costa
DOI:10.1021/acs.joc.6b02963
日期:2017.2.17
squaramic acids, the product of partial hydrolysis of squaramides, has been evaluated by UV spectroscopy at 37 °C in the pH range 3–10. Under these conditions, the compounds are kinetically stable over long time periods (>100 days). At pH >10, the hydrolysis of the squaramate anions shows first-order dependence on both squaramate and OH–. At the same temperature and [OH–], the hydrolysis of squaramides