Six thiophene-bis(benzimidazole)-based molecular probes with tunable fluorescence emission were synthesized for selective Hg2+ detection. Probe 1 contains a thiophene-bis(benzimidazole) unit without an appendage, while probes 2-4 have multiple appendages on benzimidazole rings of the core and pr...

Two new ternary zinc(II) coordination polymers (CPs), catena-(μ2-phthalato)-(μ2-1,1′-hexane-1,6-diylbis(2-methyl-1H-benzimidazole))-zinc (CP 1) and catena-(μ2-phenylene-1,4-diacetato)-(μ2-1,1′-hexane-1,6-diylbis(1H-benzimidazole))-zinc (CP 2) were synthesized via hydrothermal process. CP 1...

Four new manganese(IV) complexes with cyclic form of the tripodal oxime ligand tris(2-hydroxyiminopropyl)amine (Ox3H3, L1) and bis(benzimidazole) (Bbim) auxiliary ligand were prepared and characterized in terms of their crystal structures [(L1′Mn (Bbim)CH3OH)3MnO] (1), [L1′Mn(Bbim)H2O]·2CH3OH...

A kind of diamine monomer 2,2′-p-phenylenebis (5-aminobenzimidazole) (PBABI) with bis-benzimidazole moiety was synthesized and a facile two-step wet-spinning method was employed to fabricate a series of polyimide fibers containing bis-benzimidazole units (PBIPI) with the 3,3′,4,4′-biphenyltet...

The novel benzimidazol-2-yl-fur-5-yl-(1,2,3)-triazolyl dimeric series with aliphatic and aromatic central linkers was successfully prepared with the aim of assessing binding affinity to DNA/RNA and antitrypanosomal activity. UV–Visible spectroscopy, thermal denaturation showed interaction of he...

Sedoheptulose 1,7-bisphosphate has been shown to be present in extracts of normal rat liver. Its concentration in this tissue, estimated by colorimetric and enzymatic assays, is in the range of 5–7 nmol/g tissue. The concentration of sedoheptulose 7-phosphate in these extracts was 110 nmol/g ti...

Rabbit muscle aldolase was used to synthesize d-glycero-d-altro-octulose 1,8-bisphosphate and d-glycero-d-ido-octulose 1,8-bisphosphate. The products, isolated by ion-exchange chromatography, were characterized with the cysteine-sulfuric acid reaction and shown to be 90–95% pure by analysis for...

1.1. The enzyme D-glycero D-ido octulose l,8-bisphosphate:D-altro-heptulose 7-phosphotransferase (abbreviated to phosphotransferase, PT) catalyses the transfer of the phosphate ester group at C-l between altro-heptulose (sedoheptulose) and octulose phosphate intermediates of the L-type pentose p...

The effects of the inhibitors trimethylacetyl phosphate and cAMP have been determined in reactions catalyzed by d-glyceraldehyde-3-phosphate dehydrogenase. These inhibitors must influence the oxidation of aldehydes through substrate dependent co-operative conformational changes. Both trimethylac...

Cell surface membranes isolated from embryo cells (cell line MRRL-CH) of Manducasexta grown in continuous culture hydrolyzed Beta-(2-furyl)-acryloyl phosphate (FAP) with a Km ⋍ 0.11 mM. The effect of Mg2+, Na+, K+, and the insect steroid 20-hydroxyecdysone on FAP hydrolysis were briefly examined...

The hydrolysis of β-(2-furyl)acryloyl phosphate (FAP), a synthetic substrate for the (Na+ + K+)-ATPase by the partially purified enzyme from rat brain and rat kidney, has been assessed. Using previously determined FAPase reaction conditions, it was discovered that the KI for ouabain of the α23...

The influence of humic aggregates in water solution upon the chemical stability of carbofuran (CF) and the carbofuran-derivatives, 3-hydroxy-carbofuran (HCF) and 3-keto-carbofuran (KCF), has been investigated in basic media. An inhibition upon the basic hydrolysis of 3-hydroxy-carbofuran and 3-k...

The present study demonstrates EPS production by Cupriavidus sp. ISTL7 along with its capability to remediate a toxic carbamate pesticide, carbofuran. The strain ISTL7 efficiently degraded approximately 98% of carbofuran (400 ppm) within 96 h. GC–MS analysis showed catabolic metabolites of degr...

A library of iminolactones was prepared by esterification of several 2-hydroxyketones with a number of N-protected d- and l-α-amino acids. Some of the hydroxyketones were of terpenoid origin while others were obtained via synthesis. After N-deprotection of the intermediate esters, the free amin...

Ester 2 on treatment with sodium salt of sulfone or sulfoxide afforded 2-substituted 1,3-bis(trimethylsily)propene 3 in good yield, from which cyclopentane and cyclohexane derivatives bearing a trimethylsilyl group in the molecules were synthesized.

Some new trimethylsilylated dicarbamic acid esters 1–9 and 10 were prepared. Their thermal decomposition was studied in n-alkanes as media. The reactions were monitored by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS), respectively. Some N-silylated cyclic ureas 11–1...

Bis-ligated titanium (IV) metal complexes supported by bidentate unsymmetrical o-hydroxyaryl-substituted N-heterocyclic carbene ligands were synthesized and structurally identified. While the direct addition of the doubly deprotonated bulky imidazolidinium chloride salts [Dipp,4-RNHC-H]Cl (with ...

A series of N-organosilylalkyl-substituted ethylenediamines, R3Si(CH2)n-NHCH2CH2NH2 (R = CH3, C6H5 or 4-CH3C6H4 n = 1 or 3), were prepared by the reaction of haloalkylsilanes with ethylenediamine. The cleavage of a methyl group from silicon by concentrated sulfuric acid was used for the preparat...

Covalent linkage of ethylenediamine with the Na+/K+-ATPase complex from rabbit kidney outer medulla by the use of the water-soluble carbodiimide, N-ethyl,N′-(3-dimethylaminopropyl)carbodiimide, resulted in a 73% reaction with phosphatidylserine and only 27% with carboxylic groups in the proteic...

This paper presents the chemistry of ethylenediamines and fluorosilanes. The synthesis of thermally stable monosilyl (1–5)- and bis(fluorosilyl)ethylenediamines (6) is described. Starting with the dilithium salt of ethylenediamine and F2Si(CMe3)2 the five-membered 1,3-diaza-2-silacyclopentane (...