The effect of nitric oxide synthase (NOS) inhibitors on the brain production of endogenous glutamate receptor antagonist, kynurenic acid, was estimated in vitro. Under standard incubation conditions N(G)-nitro-L-arginine, but not N(G)-nitro-L-arginine methyl ester, up to 5 mM, or 7-nitroindazole, up to 100 microM, inhibited de novo synthesis of kynurenic acid in cortical slices. However, during...

Vegetable oils and fats in comparison with diesel fuel have high viscosity, by transesterification method the viscosity of oil can be decreased. Transesterification of triglyceride with alcohol is one of the methods for production of biodiesel. In this study sunflower oil, methanol and ethanol, with molar ratio of (1:3, 1:4, 1:6, 1:8) and temperature (40, 50, 60 º C) were dependent parameters e...

The esterification reaction of trimellitic anhydride chloride TMAC 1 with N-(hydroxymethyl) phthalimide NHMP 2, N-(2-hydroxyethyl) phthalimide NHEP 3 or N-(hydroxymethyl) thalidomide NHMT 4 afforded novel cyclic imide-ester derivatives; phthaloyl-phthalic anhydride methyl ester PPAME 5, phthaloyl-phthalic anhydride ethyl ester PPAEE 6 and thalidomide-phthalic anhydride methyl ester TPAME 7, res...

A promising strategy to break through the selectivity-conversion limit of direct methane conversion achieve high yields is protection methanol via esterification a more stable methyl ester. We present an aerobic methane-to-methyl-ester approach that utilizes highly dispersed, cobalt-containing solid catalyst, along with significantly favorable reaction conditions compared existing homogeneously...

reduction of methoxyketon 1 by nabh4 gives methoxyketol 2. allthough acetate and tosylate of this alchohol were not seprated, benzoate ester was isolated. reduction of ketol 2 by lialh4 gives alchohol 4. ketol 9 does not react with methyl magnesium iodide, but methoxyketon 1 react with both methyl magnesium iodide and phenyl magnesium iodide gives corresponding hydrocarbons. keton 13 with pheny...

Background: Gossypium arboreum is resistant to Cotton leaf curl Burewala virus and its cognate Cotton leaf curl Multan betasatellite (CLCuBuV and CLCuMB). However, the G. arboreum wax deficient mutant (GaWM3) is susceptible to CLCuV. Therefore, epicuticular wax was characterized both quantitatively and qualitatively for its role as physical barrier against whitefly mediated viral transmission a...

The kinetics of the degradation of the inhibitors of the nitric oxide synthesis, NG-nitro-L-arginine methyl ester and NG-nitro-L-arginine, were examined in human amniotic fluid and umbilical vein blood. The reaction rate constants were calculated or estimated using the time-controlled concentration course of both substances. These concentrations were measured by high-performance liquid chromato...

Light induction of light-harvesting chlorophyll a/b-binding protein (LHCP) mRNA accumulation was studied in light-dark synchronized cultures of Chlamydomonas reinhardi. LHCP mRNA accumulation was prevented by the chlorophyll-synthesis inhibitor alpha,alpha-dipyridyl which blocks late steps in the chlorophyll biosynthetic pathway and leads to the accumulation of the porphyrin intermediate magnes...