The differences in the reactivity of diphenyllead and diphenyltin dichloride with benzil bis(thiosemicarbazone) LH 6 are explored. The reaction of PbPh 2 Cl 2 afforded the complex [Pb(LH 4 )] 1, containing the ligand doubly deprotonated and without the phenyl grou...
OBJECTIVE: Our purpose was to determine whether epidural administration of ephedrine sulfate simultaneously with induction of lumbar epidural anesthesia for nonemergency cesarean section reduces the incidence of maternal hypotension. STUDY DESIGN: In a double-blinded, placebo-controlled trial, 5...
This paper reports the determination of caffeine, ephedrine and pseudo-ephedrine in a dietary product by two rapid and simple methods utilising capillary electrophoresis (CE). The solutes were extracted from the product using 0.2 M HCl and determined by CE with background electrolytes containing...
This paper presents a micellar electrokinetic chromatography (MEKC) method with diode-array detection to analyze for seven major components in the traditional Chinese medicinal preparation of Ge-gen-tang. Those analytes were successfully separated within 9 min using a pH 9.0 borate buffer conta...
The x-ray analysis of the crystal structure of 8-azaguanine monohydrate is reported. Bond lengths are given with standard deviations of 0.02 A. Bond angles are given with standard deviations of 1 to 2°. All the hydrogen atoms in the structure were found. The hydrogen atom in the imidazo ring is...
A comparative study, luminescence behavior of 6-Mercaptopurine (6-MP), Azathiopurine (BAN), and 8-Azaguanine (8-Azan) have been investigated including the low temperature phosphorescence, the low temperature fluorescence, the room temperature phosphorescence (RTP) and the room temperature fluore...
The interaction between 8-azaguanine (8-Azan) and bovine serum albumin (BSA) in Tris-HCl buffer solutions at pH 7.4 was investigated by means of fluorescence and ultraviolet-visible (UV-Vis) spectroscopy. At 298 K and 310 K, at a wavelength of excitation (λ ex) of 282 nm, the fluorescence inten...
The US Food and Drug Administration has not approved a treatment for cocaine addiction, possibly due in part to the fact that repeated cocaine use results in dysregulation of multiple neurotransmitter systems, including glutamate and dopamine, and an emergence of increased negative affective sta...
Chemical and/or thermal conversion of analytes in a sample and/or GC injector can mislead the identification of analytes in a toxicological screening. In addition, library search can even more complicate the identification. The risk for false positive identification of phenmetrazine in an ephedr...
Wastewater-based epidemiology (WBE) as means to estimate illicit drug and new psychoactive substance (NPS) consumption with spatial and temporal resolution is gaining increasing attention. In order to evaluate a given NPS using WBE, in vivo metabolism and microbial biotransformation of excretion...
The heterologous biosynthesis of 6-deoxyerythronolide B (6dEB), a key intermediate in the biosynthesis of erythromycin, has recently been achieved in Escherichia coli, but the experimental product yield remains low. In this study, in silico strategies were adopted to evaluate and improve the bio...
An analytical method for simultaneous determination of erythromycin propionate and its active metabolite, erythromycin base, in human plasma by high-performance liquid chromatography–electrospray mass spectrometry (HPLC–ESI-MS) was developed and validated. Roxithromycin was selected as the int...
A high erythromycin producing mutant strain Saccharopolyspora erythraea HL3168 E3-ΔmutB was constructed by deleting mutB (SACE_5639) gene encoding the beta subunit of methylmalonyl-CoA mutase of an industrial strain of S. erythraea HL3168 E3. Industrial media and process control strategies were...
Rheumatoid arthritis fibroblast‐like synoviocytes (RA‐FLSs), a pathological hallmark of rheumatoid arthritis (RA), exhibit the characteristics of tumor cells. The extracts of Cirsium japonicum var. ussuriense have been shown to possess antitumor and anti‐inflammatory activities. Our study aim...
Cirsium setidens Nakai contains bioactive compounds that exert biological activities. Method validation for analysis of the pectolinarin content in Cirsium setidens extracts (CSE) and radical scavenging-linked antiobesity activities using 3T3-L1 cells and C57BL/6 mice were performed. The pectoli...
Pectolinarin and pectolinarigenin have been reported to be major compounds in Cirsium setidens. In the present study, we demonstrated inhibitory effects of pectolinarin and pectolinarigenin from C. setidens on melanogenesis. Melanin synthesis was decreased in both pectolinarin- and pectolinarige...
Seven new cobalt(II) and nickel(II) complexes with Schiff's bases were synthesized. The Schiff's bases were prepared by the condensation of 1-aminonaphthalene with carbinols, α-hydroxy-α-phenylacetophenone (L1), salicylaldehyde (L2), and 2-hydroxy-1-naphthaldehyde (L3), and of 2-aminonaphthale...
Schiff base N-(2-hydroxy-3-methoxybenzalidene)1-aminonaphthalene has been synthesized from the reaction of 2-hydroxy-3-methoxybenzaldehyde with 1-aminonaphthalene. The compound were characterized by elemental analysis, FT-IR, 1 H NMR, 13 C NMR and UV–visible techniques. The UV–...
The electrooxidation of 8-(3-acetylimino-6-methyl-2,4-dioxopyran)-1-amino-naphthalene Schiff base in acidic aqueous solution containing 0.1 M H 2 SO 4 yielded a polymer film on glassy carbon electrode. The electrooxidative polymerization process was studied by potential sweep ele...
The aim of conducted research was the estimation of 8-hydroxyquinoline sulfate activity on selected mould strains isolated from the buildings with biodeterioration evidence. In the tests for the fungicidal activity, 6 working concentrations rangeing from 0.01 % to 1.0 % of 8-hydroxyquinoline sul...
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