نتایج جستجو برای: atropisomers
تعداد نتایج: 126 فیلتر نتایج به سال:
Abstract Coherent anti‐Stokes Raman scattering‐Raman optical activity (CARS‐ROA) is a coherent version of spontaneous ROA spectroscopy, the latter being well‐established chirally sensitive vibrational spectroscopic technique. A central major advantage heterodyne‐detected CARS‐ROA over drastic reduction acquisition times from several hours to approximately 1 min due high ratio chiral signal rela...
Several routes for the synthesis of m-terphenyl thio-, seleno-, and telluroethers were investigated. m-Terphenyl iodides react with diphenyl diselenides or ditellurides (CsOH·H(2)O, DMSO, 110 °C) to give the desired compounds in 19-84% yield which significantly extends the previously reported such reactions because o-benzyne cannot be an intermediate as previously suggested. However, the most g...
Super-statins are synthetic inhibitors of 3-hydroxy-3-methylglutaryl-coenzyme A reductase, which is the rate-limiting enzyme responsible for the biosynthesis of cholesterol. All of the super-statins with a C=C double bond spacer between the heterocyclic and the dihydroxycarboxylic moiety that are currently on the market exist as E-isomers. To extend the understanding of conformational and therm...
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