The capacities to inhibit coumarin 7-hydroxylase activity of human cytochrome P450 2A6 (CYP2A6) by organosulfur compounds were evaluated. Five dialkyl sulfides and five dialkyl disulfides, with alkyl chains from methyl to amyl, were examined. In addition to these chemicals, diallyl sulfide, diallyl disulfide, allyl methyl sulfide, allyl n-propyl sulfide, allyl phenyl sulfide, diphenyl sulfide, ...

A comparison of the (13)C nuclear magnetic resonance chemical shifts of some 15,16-dialkyl-15,16-dihydropyrenes with the corresponding 15,16-dialkyl-2,7,15,16-tetrahydropyrenes provides a measure of the effect of ring current on carbon-13 chemical shifts in which other effects may be expected to be negligibly small. The general conclusion is that the absolute magnitude of the ring-current effec...

Wilson’s exact renormalization group equations are derived and integrated for the relevant part of the pure Yang–Mills action. We discuss in detail how modified Slavnov–Taylor identities controle the breaking of BRST invariance in the presence of a finite infrared cutoff k through relations among different parameters in the effective action. In particular they imply a nonvanishing gluon mass te...

Protonation of the highly reactive 1:l intermediate produced in the reaction between triphenylphosphine and dimethyl acetylenedicarboxylate by 2- hydroxyacetophenone leads to vinyltriphenylphosphonium salt, which undergoes aromatic electrophilic substitution reaction with the conjugate base to produce compounds 4,5, and 6 in 1 : 1.2:0.5 ratios

Im DAAD-Projekt JCSE entstanden englischsprachige multimediale Lehrmaterialien zur Softwaretechnik. Bedingt durch die Zielgruppe, Universitäten aus Südosteuropa, wurden spezielle Lösungen entwickelt, die die Anwendung der Materialien durch die Projektpartner erleichtern. Ein Vergleich mit dem verwandten MuSofT-Projekt zeigt vielfältige Kooperationsmöglichkeiten.

Iron(II) and iron(III) salts catalyze the oxidative alpha-phosphonation of N,N-dimethylanilines with dialkyl H-phosphonates in the presence of tert-butylhydroperoxide.