The complexation behaviors of tetrapod 1,2,4,5-tetrakis(8-hydroxyquinolinoxymethyl) benzene (1) and dipod 1,2-bis(8-hydroxyquinolinoxymethyl)benzene (2) have been determined by fluorescence spectroscopy in CH3CN–H2O (4:1) buffered at pH 6.9 [HEPES 10 mM] and by 1H NMR in CD3CN-CDCl3 (1:1) mixtu...
Currently available EPR spin-trapping techniques are not sensitive enough for quantification of basal vascular nitric oxide (NO) production from isolated vessels. Here we demonstrate that this goal can be achieved by the use of colloid Fe(DETC) 2 . Rabbit aortic or venous strips incubate...
Sodium diethyldithiocarbamate (DDTC) self-assembled monolayer (SAM) on copper surface has been investigated by SERS and EDS and the results show that DDTC SAM is chemisorbed on copper surface by its S atoms with tilted orientation. Corrosion inhibition ability of DDTC SAM was measured in 3% NaCl...
The complex formation between Se(IV) and Na(DDTC) has been exploited to carry out the transport of selenite through an SSLM. The differences of solubilities of the related complex in aqueous and in organic kerosene solution along with the additional effect of H 2 O 2 have provid...
To enhance the anti-coccidial effect of dinitolmide and reduce its residual, the dinitolmide/MMT compounds were synthesized by the method of solution intercalation via dinitolmide intercalated into Na + -montmorillonite (Na + -MMT). The structure of compounds was characterized by X-ray diffracti...
An accelerated solvent extraction coupled with gas chromatography‐tandem mass spectrometry (ASE‐GC‐MS/MS) method for detecting dinitolmide residue and its metabolite (3‐amino‐2‐methyl‐5‐nitrobenzamide, 3‐ANOT) in eggs was developed and optimized. The samples were extracted using ASE wit...
BackgroundCytarabine (cytosine arabinoside, ara‐C) is a chemotherapeutical agent used in the treatment of pediatric acute lymphoblastic leukemia (ALL). Adverse drug reactions, such as interpatient variability in sensitivity to ara‐C, are considerable and may cause difficulties during chemother...
The combination of cytarabine (ara-C) with fludarabine is a common approach to treating resistant acute myeloid leukemia. Success depends on a fludarabine triphosphate (F-ara-ATP)-mediated increase in the active intracellular metabolite of ara-C, ara-C 5’-triphosphate (ara-CTP). Therapy-resista...
1. Stop injection/infusion immediately 2. Get extravasation kit 3. Put on (sterile) gloves 4. Replace infusion lead or syringe with 5 ml disposable syringe and aspirate slowly as much as possible of the extravasated drug; Cave! do not exert pressure on extravasation area
The five new copper(II) complexes with some S-alkyl derivatives of thiosalicylic acid (alkyl=benzyl (L1), methyl (L2), ethyl (L3), propyl (L4), butyl (L5)) have been synthesized and characterized by microanalysis and infrared spectra. The spectroscopically predicted structure of the obtained bin...
The formation and structural aspects of some metal complexes of thiosalicylic acid (TSA) were studied. The μ‐bridging tetra‐coordinated Ru complex, [Ru(C6H4(CO2)(μ‐S)(H2O)]2 (1) was formed by hydrothermal reaction of TSA with RuCl3. The complexes [M(dtdb)(phen)(H2O)]n (2–4) (M = ZnII, CoII...
The spectroscopically predicted structure of the obtained copper(II)-complex with S-ethyl derivative of thiosalicylic acid was confirmed by X-ray structural study and compared to previously reported crystal structure of the Cu complex with S-methyl derivative. Single crystals suitable for X-ray ...
The pyroglutamic acid derivative 4 was converted through several steps into 2S,3R,4S-epoxyproline 8. Key steps of the reaction sequence were the stereoselective epoxidation of 4 to 5 and the chemoselective reduction of the amide group of 5 with concomitant transformation of the acetal moiety in...
Novel analogs of l-prolyl-l-leucylglycinamide (PLG) were synthesized wherein the prolyl residue was replaced with other amino acids based on a 3,5-disubstituted proline scaffold. In some examples, the l-leucyl residue was also replaced by l-valine. These analogs were tested for their ability to ...
Fluorine‐18 labeled (2S,4S)‐4‐fluoro‐l‐proline (cis‐[18F]4‐FPro) has been reported to be a potential positron emission tomography tracer to study abnormal collagen synthesis occurring in pulmonary fibrosis, osteosarcomas, mammary and colon carcinomas. In this paper, we report the stereosp...
The present work demonstrates the presence of an impurity, 2,4,6-tribromoaniline (TBA), in the color additives D&C Red Nos. 21 and 21 lake (21L) and describes the determination of TBA in certified lots of D&C Red Nos. 21, 21L and 22 (Eosin Y). A method was developed using solid-phase microextrac...
The electrochemical oxidation of 4-bromo-, 2,4-dibromo-, 2,4,6-tribromo- and 4-iodoanilines was investigated in acetonitrile solution. Based on the experimental results, it can be stated that the Bacon-Adams mechanism (J. Am. Chem. Soc. 90 (1968) 6596) is the main electrochemical oxidation route...
An approach for the synthesis of moenomycin A12C-glycoside partial structures is reported based on allyltin chemistry.
An approach for the synthesis of moenomycin A 1 2 C-glycoside partial structures is reported based on allyltin chemistry.
The preparations of d-ribo- and l-lyxo-phytosphingosines (1, 2) are described. Chelation-controlled addition of tetradecylmagnesium bromide to pentylidene-protected d-threitol aldehyde 6 afforded the key intermediate tetrol 7, providing the desired l-lyxo stereochemistry of phytosphingosine. Inv...
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