نتایج جستجو برای: sulfoxide
تعداد نتایج: 9050 فیلتر نتایج به سال:
The title mol-ecule, [RuCl(2)(C(4)H(8)OS)(3)(H(2)O)], is the isomer with the two chloride ligands cis and the three S-coordinated tetra-methyl-ene sulfoxide ligands facial relative to the Ru(II) center. The Ru-Cl distances are 2.4161 (7) and 2.4317 (7) Å, the Ru-O distance is 2.1540 (19) Å, and the Ru-S distances are in the range 2.2254 (8)-2.2657 (7) Å, with the shortest being that trans to th...
Selenium is a chemical element participating in the synthesis of selenocysteine residues that play a pivotal role in the enzymatic activity efficiency of selenoproteines. The methionine sulfoxide reductase (Msr) system that reduces methionine sulfoxide (MetO) to methionine comprises the selenoprotein MsrB (MsrB1) and the non-selenoprotein MsrA, which reduce the R- and the S- forms of MetO, resp...
The effects of diphenylamine, dimethyl sulfoxide, streptomycin, AMO-1618, and beta-ionone on the carotene composition of a wild-type and three mutant strains of Phycomyces blakesleeanus have been examined. Diphenylamine increased the phytoene and phytofluene concentrations of all strains while reducing the levels of the color carotenes. Dimethyl sulfoxide reduced the concentration of both cycli...
A sulfoxide-directed, metal-free ortho-propargylation of aromatics and heteroaromatics exploits intermolecular delivery of a propargyl nucleophile to sulfur followed by an intramolecular relay to carbon. The operationally simple cross-coupling procedure is general, regiospecific with regard to the propargyl nucleophile, and shows complete selectivity for products of ortho-propargylation over al...
A new and efficient sulfide monooxygenase-producing strain, ECU0066, was isolated and identified as a Rhodococcus sp. that could transform phenylmethyl sulfide (PMS) to (S)-sulfoxide with 99% enantiomeric excess via two steps of enantioselective oxidations. Its enzyme activity could be effectively induced by adding PMS or phenylmethyl sulfoxide (PMSO) directly to a rich medium at the early log ...
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