Adsorption isotherms indicate that alkylamino-s-triazines containing chloro, methoxy, and methylthio groups in the 2-position are removed from 2% ethanol solution by nylon and cellulose triacetate by a solid solution process. It is proposed that the binding sites of the s-triazines are the elect...

The structural diversity of the metabolic pool of Pelargonium reniforme was extended by the characterization of the 1C4-glucose based ellagitannin pelargoniin E, gallic acid n-butyl ester, (−)-4,4′,9′-trihydroxy-3′,5′-dimethoxy-2,7′-cyclolignan 9-O-β-glucopyranoside and reniformin, a diter...

Sporosarcina species are psychrotolerant endospore-forming bacteria that are predominantly isolated from processed minced fish meat (surimi). Their levels should be controlled to maintain the quality of surimi-based food products. Our previous study suggested that the fatty acid composition of t...

We investigated the formation of inclusion complexes of the antioxidants (AOs) gallic acid, GA, and its hydrophobic derivatives ethyl (EG), propyl (PG) and butyl (BG) gallate with β-cyclodextrin (β-CD) by employing the UV spectral shifts method and, for the sake of comparisons, a modified phas...

Distributions of a homologous series of gallic acid (GA) derivatives of increasing lipophilicity were determined in stripped fish oil-in-water emulsions. The distribution was determined by employing a kinetic method based on the reaction between the hydrophobic 4-hexadecylbenzenediazonium ions (...

p-Methoxy-β-phenylpropiophenone triplets undergo efficient intramolecular deactivation by a mechanism that involves quenching of the carbonyl triplet by the aromatic ring. Inclusion of the ketone in either β- or γ-cyclodextrins leads to protection from external, water-soluble quenchers, such ...

N-Aryl-N′,N″-di(pyridin-2-yl)- and N-aryl-N′,N″-bis(6-methylpyridin-2-yl)guanidines (1–4 and 5–7) were isolated in 75%–81% yields. Reactions of Pd(OAc)2 with guanidines 2–7 carried out separately in toluene at 60 °C for 3 h afforded 8–13 respectively in 69%–80% yields. Compounds 1–13...

Enantioselective Friedel–Crafts alkylation reactions of indoles with β,γ-unsaturated α-ketoesters catalyzed by novel chiral C2-symmetric squaramide-linked bisoxazoline–Zn(OTf)2 complexes were investigated. The corresponding indole ketoesters were obtained in good to excellent yields (up to ...

The integrin αvβ3 is expressed in a number of cell types and is thought to play a major role in several pathological conditions. Various small molecules that inhibit the integrin have been shown to suppress tumor growth and retinal angiogenesis. The tripeptide Arg-Gly-Asp (RGD), a common bindi...

The benzamidine moiety, a well-known arginine mimetic, has been introduced in a variety of ligands, including peptidomimetic inhibitors of trypsin-like serine proteases. According to their primary substrate specificity, the benzamidine residue interacts with the negatively charged aspartate at t...

Several drugs selective for the serotonin 5-HT2A receptor were tested for their effects on spontaneous and K+-evoked [3H]γ-aminobutyric acid (GABA) release from slices of rat frontal cortex. Under K+ stimulation, the antagonists ketanserin, spiperone, R-(+)-α-(2,3-dimethoxyphenyl)-1-[2-(4-fluo...

This paper reports the acid-catalysed reactions between methanol and the bio-oil from the fast pyrolysis of mallee bark. The study focused on the reactions of the fatty acids, esters, furans and anhydrosugars in the bio-oil with methanol at 70–170 °C in the presence of a solid acid catalyst Am...

Thirty-three meso-dihydroguaiaretic acid (meso-DGA) derivatives bearing esters, ethers, and amino-ethers were synthesized. All derivatives were tested against twelve drug-resistant clinical isolates of Gram-positive and Gram-negative bacteria, including sensitive (H37Rv) and multidrug-resistant ...

The asymmetric Friedel–Crafts reaction between methyl (E)-2-oxo-4-aryl-3-butenoates (1a–c) and activated benzenes (2a–d) has been efficiently catalyzed by the ScIII triflate complex of (4′S,5′S)-2,6-bis[4′-(triisopropylsilyl) oxymethyl-5′-phenyl-1′,3′-oxazolin-2′-yl]pyridine (pybox 3)....

A sensitive liquid chromatography–mass spectrometric (LC–MS) method for quantification of an active psychedelic hallucinogenic drugs (trimethoxyamphetamines) in human urine after solid-phase extraction (SPE) with C18 cartridge was developed and validated. Chromatographic separation was achieve...

The thermal stabilities of polymaleimide (PMI), poly(N-methyl maleimide) (PMMI), poly(N-ethyl maleimide) (PEMI), poly(N-n-propyl maleimide) (PNPMI) and poly(N-isopropyl maleimide) (PIPMI) were studied over the temperature range 300° to 400°C under a constant flow of nitrogen. At the initial st...

BackgroundPreparation of a new series of Michael adducts as an 1-(4-acetylphenyl)-3-aryloxypyrrolidine-2,5-dione derivates using cellulose sulfuric acid catalyst with objective of obtaining lead compounds for future development as anticonvulsants.

A series of novel 4,6-diphenyl-2-(1H-pyrrol-1-yl)nicotinonitrile analogues of crolibulin and combretastatin A-4 (CA-4) were discovered using a 2-(1H-pyrrol-1-yl)pyridine ring as link-bridge to retain the cis-orientations of A-ring and B-ring. All the target compounds were synthesized and evaluat...

This report describes a new palladium catalyzed synthesis of 4-cyano-1,10-phenanthroline (nphen, 1), 4,7-dicyano-1,10-phenanthroline (dnphen, 2) and their corresponding ruthenium complexes. The two cationic complexes, [(tbbpy)2Ru(nphen)]2+ 3 and [(tbbpy)2Ru(dnphen)]2+ 4 (tbbpy = 4,4′-di-tert-bu...

Using phen or bpy (phen = 1,10-phenanthroline, bpy = 2,2′-bipyridine) as ancillary ligands and dicnq (dicnq = 6,7-dicyanodipyrido[2,2-d:2′,3′-f]quinoxaline) as the main ligand, two new Ru(II) polypyridyl complexes containing cyano groups, [Ru(phen)2dicnq]2+ (Ru1) and [Ru(bpy)2dicnq]2+ (Ru2) h...