نتایج جستجو برای: s diethyl phenyl
تعداد نتایج: 736722 فیلتر نتایج به سال:
As a part of our continuing work to improve the flame retardance of some chain-growth polymers, by employing a reactive route, we have synthesized several unsaturated compounds containing either phosphorus (P), or both phosphorus (P) and nitrogen (N), bearing groups in different chemical environments. They included: diethyl(acryloyloxymethyl)phosphonate (DEAMP); diethyl(1-acryloyloxyethyl)phosp...
The effect of triazophos (O, O-diethyl O-1-phenyl-1 H-1, 2, 4-triazol-3-yl phosphorothioate), a widely used insecticide was studied on the induction of oxidative stress and histological alterations at sub-chronic doses in male albino rats. Oral administration of triazophos at concentrations of 1.64, 3.2 and 8.2 mg/kg body wt for 30 days produced dose as well as time-dependent increase in the li...
The bacterial phosphotriesterase from Pseudomonas diminuta catalyzes the hydrolysis of organophosphate nerve agents such as paraoxon (diethyl p-nitrophenyl phosphate) with a turnover number of approximately 10(4) s(-1). The active site of the enzyme has been shown to be composed of a binuclear Zn2+ complex with a bridging hydroxide. The utilization of chiral phosphotriesters has demonstrated th...
In the title compound, C(17)H(15)FO(2)S, the O atom and the 4-fluoro-phenyl group of the 4-fluoro-phenyl-sulfinyl substituent lie on opposite sides of the plane of the benzofuran; the 4-fluoro-phenyl ring is almost perpendicular to this plane, making a dihedral angle of 88.99 (4)°. The crystal structure exhibits inter-molecular C-H⋯O hydrogen bonds and C-H⋯π inter-actions between the methyl H a...
The centrosymmetric title complex, [Ni{S(2)P(OC(2)H(5))(2)}(2)], has been redetermined using area-detector data. The central Ni(S(2)P)(2) core is essentially planar and confirms the early results of McConnell & Kastalsky [Acta Cryst. (1967), 22, 853-859] based on multiple film technique data. In the title structure, the standard uncertainty values are approximately seven times lower and all H-a...
In the crystal structures of the title compounds, C15H11Cl2NOS, (1), and C15H11Cl2NO2S, (2), wherein (2) is the oxidized form of (1), the thia-zolidine ring is attached to two chloro-phenyl rings. The chloro-phenyl ring on the 2-carbon atom position points in the same direction as that of the S atom in (1), while in (2), the S atom points in the opposite direction. The O atom on the chiral S at...
In the title compound, C(23)H(19)FO(5)S(2), two of the phenyl ring C atoms and a sulfonyl O atom of the phenyl(methylsulfonyl) group are disordered over two positions with occupancies 0.522 (17):0.478 (17). The methyl-phenyl and fluoro-phenyl rings are essentially planar, with maximum deviations of 0.0059 (8) and 0.0047 (9) Å, respectively. The crystal packing is stabilized by C-H⋯F inter-actions.
sponges are the simplest multicellular animals that lack defense mechanisms and rely on chemical defense that have been used by mankind to develop antimicrobial drugs against diseases. the present study was designed to demonstrate the antibacterial and antifungal activities of marine sponge dysidea pallescens semipolar and nonpolar extracts. in this study, d. pallescens were collected from he...
objective(s) phosphatidate phosphohydrolase (pap) catalyzes the dephosphorylation of phosphatidic acid to yield pi and diacylglycerol. two different forms of pap in rat hepatocyte have been reported. pap1 is located in cytosolic and microsomal fractions and participates in the synthesis of triacylglycerols, phosphatidylcholine, and phosphatidylethanolamine, whereas the other form of phosphatid...
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