‘Pink Lady ® ’ apples (Malus domestica) fruit were harvested at commercial maturity treated with three different agrochemical products, and stored at 1°C under either air or controlled atmosphere conditions (2.5kPa O 2 +3kPa CO 2 and 1kPa O 2 +2kPa CO 2 ...
To better assess biomonitoring data in workers exposed to captan and folpet, the kinetics of ring metabolites [tetrahydrophthalimide (THPI), phthalimide (PI) and phthalic acid] were determined in urine and plasma of dermally exposed volunteers. A 10 mg kg−1 dose of each fungicide was applied on ...
A human in vivo toxicokinetic model was built to allow a better understanding of the toxicokinetics of folpet fungicide and its key ring biomarkers of exposure: phthalimide (PI), phthalamic acid (PAA) and phthalic acid (PA). Both PI and the sum of ring metabolites, expressed as PA equivalents (P...
Asarinin, a furo-furan lignan compound with two benzyl-ethereal carbons of opposite stereochemistry, was monooxidised at a selected centre by DMD to a chiral substituted tetrahydrofuran. Use of a dilute solution of DMD was crucial for the success of the process. The stereochemistry of the prod...
Enterolactone (ENL) and enterodiol are mammalian lignans. Several plant lignans have been reported as precursors of mammalian lignans. However, asarinin (AS), a furofuran type lignan which occurs in medicinal plants and foods, has not been reported as mammalian lignan precursor to date. After th...
During analysis of certain stability batches of an animal health product, an unknown peak was found at a level above the identification thresholds set by VICH. This unknown species is extremely labile in the gas phase under normal electrospray ionization (ESI) mass spectrometric condition. Multi...
Activation of vascular smooth muscle cells (VSMCs) represents a key event of atherosclerosis. It is triggered e.g. by the action of platelet-derived growth factor (PDGF). The polyphenol (+)-episesamin (ES) is known to block the TNF-α-induced mitogenic VSMC response. Aiming to develop novel ther...
AimActivation of vascular smooth muscle cells (VSMC), a key event in the pathogenesis of atherosclerosis, is triggered by inflammatory stimuli such as tumour necrosis factor‐alpha (TNF‐α) causing a mitogenic VSMC response. The polyphenol (+)‐episesamin (ES) was shown to counteract TNF‐α‐i...
In this study, we examined the effect of dietary arachidonic acid (AA) and sesame lignans on the content and n-6/n-3 ratio of polyunsaturated fatty acid (PUFA) in rat liver and the concentrations of triglyceride (TG) and ketone bodies in serum. For 4 wk, rats were fed two types of dietary oils: ...
A two-step, one-pot synthesis of ampicillin from penicillin G potassium salt (PGK) in aqueous buffer/organic co-solvent has been achieved. Ethylene glycol (EG) was chosen as the organic co-solvent. Factors including co-solvent content, enzyme loading, reaction temperature and substrate concentra...
Penicillin amidase was shown to catalyze the transesterification of phenoxyacetic acid methyl ester (POME) with 1-propanol in organic solvents. The enzyme was found to be over 750-fold more reactive in hexane upon lyophilizing in the presence of KCl (to produce an enzyme preparation containing 9...
Four new 1: 1 ratio of Se+4, Nb+5, Ta+5, and Te+4 penicillinate complexes are synthesized in the reaction of penicillin potassium salt (Pin-G-K) with Se(IV), Nb(V), Ta(V), and Te(IV) chlorides. Structures of the synthesized complexes are characterized by elemental analysis, conductivity, magneti...
The important practical problem of poor heat stability of poly(l‐lactic acid) (PLLA) is addressed by the addition of N, N′‐bis (benzoyl) sebacic acid dihydrazide (BSAD) and talc as a nucleating agent system. The idea of incorporating talc into the PLLA/BSAD composites is that talc can provide...
A new xanthene-containing diamine monomer was successfully synthesized in four steps by the condensation of β-naphthol and 4-nitrobenzaldehyde in the presence of p-toluenesulfonic acid catalyst, reduction of the nitro intermediate, the nucleophilic substitution reaction of amine compound and 3,...
N-ortho-ferrocenyl benzoyl dipeptide esters 2–6 were prepared by coupling ortho-ferrocenyl benzoic acid 1 to the dipeptide ethyl esters GlyGly(OEt) (2), GlyAla(OEt) (3), GlyPhe(OEt) (4), AlaGly(OEt) (5) and AlaPhe(OEt) (6). The compounds were fully characterized by a range of NMR spectroscopic ...
Original representatives of phosphacyclophanes on the basis of the unsymmetrical 1,3-dihydroxynaphthalene and phosphorous triamides are synthesized by three different procedures, including dismutation. The different procedures are shown to lead to a single structural isomer exclusively. The dism...
The synthesis of ionizable chromoionophores, derivatives of resorcinol and dihydroxynaphthalene has been described. Acid-base properties of these compounds were studied in a mixed, water containing solvent system. Complexation of metal cations was investigated. Selectivity for lithium and sodium...
The optimization procedure for the reversed-phase HPLC separation of 1-naphthyl isocyanate derivatives of linear alcohol polyethoxylates (LAEs) is reported. Using a C 1 8 -bonded silica stationary phase and acetonitrile-water mixtures as mobile phase, different trends in the chromat...
The benzophenone (BP)-sensitized photolysis of the title compound (1) in oxygen-free acetonitrile and benzene gave 1-naphthaldehyde and N-(1-naphthoyl)-1-naphthalenemethylamine as main products along with small amounts of unidentified products. The occurrence of triplet-triplet energy transfer ...
Synthesis and X-ray structural investigations have been carried out for the two title compounds C20H14N2O3 (4) and C23H14N2O3⋅C2H3N (5). Compound 4 crystallizes in the monoclinic space group P21/n, with a = 7.0542(5), b = 8.822(1), c = 24.833(2) Å, β = 94.30(4)∘, V = 1541.0(4) Å3, and Z = 4. C...
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