Dibenzo[b, f]azocin-6(5H)-one and dibenzo[b,g]azonin-6(13H)-one were prepared in five steps from methyl 4-amino-3-iodobenzoate.

The oxidative cyclization–carbonylation of meso-2-alkyl-2-propargylcyclohexane-1,3-diols mediated by Pd(II) with chiral bisoxazoline (box ligand) afforded bicyclic-β-alkoxyacrylates. Based on a ligand screening, 2,2′-isopropylidenebis[(4S,5R)-4,5-di(2-naphthyl)-2-oxazoline] ligand has been de...

Crown ethers are macrocyclic polyethers. Together with the nearly contemporaneous discovery of cryptands, they underlay the field that is now called supramolecular chemistry. These compounds bind alkali metal and alkaline earth cations, which lack the complex orbital structures of transition met...

KIAA1363 is a serine hydrolase whose activity has been shown to be positively associated with tumor cell invasiveness. Thus, inhibitors of KIAA1363 represent a novel targeted therapy approach towards cancer. AX11890 ((1-bromo-2-naphthyl) N,N-dimethylcarbamate) was identified as a KIAA1363 inhibi...

To investigate the resolution of secondary alcohols using 2-methoxy-2-(1-naphthyl)propionic acid (MαNP acid), 2-methyl-4-heptanol, one of the aggregation pheromones of Metamasius hemipterus, was resolved using (S)-MαNP acid. As a chiral-resolving agent, MαNP acid is superior to 3,3,3-trifluor...

Enantiopure O-ethyl (2-naphthyl)phosphonothioic acid 1 was designed on the model of O-ethyl phenylphosphonothioic acid, based on the fact that the chiral recognition abilities of enantiopure mandelic acid and cis-1-aminoindan-2-ol were improved upon by replacing their phenyl/phenylene groups wit...

In this study, oxime and oxime ether derivatives of anticonvulsant nafimidone [1-(2-naphthyl)-2-(imidozole-1-yl)ethanone] were prepared as potential anticonvulsant compounds. Nafimidone oxime was synthesized by the reaction of nafimidone and hydroxylamine hydrochloride. O-Alkylation of the oxime...

The marine natural product (+)-pectinatone containing ‘skip’ 1,3-dimethyl stereocentres was synthesised via the iterative alkylation of propanal SAMP-hydrazone with β-branched iodides. Factors affecting the selectivity of the alkylation reaction and the in situ formation of volatile β-branch...

Low-molecular-weight polyethyleneimine (LMW PEI) exhibits poorer transfection efficiency but lower cytotoxicity compared to high-molecular-weight polyethyleneimine (such as PEI 25 kDa). To enhance the gene transfection performance of LMW PEI, we herein demonstrate a new strategy for modifying LM...

A novel ligand, vicinal dioxime ligand (egonol-hydrazone glyoxime) (LH2) was synthesized and characterized using 1H NMR, 13C NMR, MS, AAS, infrared spectroscopy, and magnetic susceptibility measurements. Mononuclear nickel (II), copper (II) and cobalt (II) complexes with a metal:ligand ratio of ...

A focused library of new dicationic ionic liquids (DiILs) 6–41 appended pyridinium hydrazone and phenoxy side chain hybrids as counter cations were designed and synthesized, utilizing quaternization and metathesis reactions under both conventional and microwave irradiation. The novel DiILs 6–4...

A new sulfonamide-derived prophane sulfonyl hydrazone compounds: 2-hydroxy- acetophenoneprophanesulfonylhydrazone (afpsh), 5-Cl-2-hydroxyacetophenoneprophane sulfonylhydrazone (5-Clafpsh), 3,5-di-tert-butyl-2-hydroxybenzaldehydeprophanesulfonyl hydrazone (3,5tbsalpsh) and their Pd(II) complexes ...

Recently, altered expression levels of microRNAs (miRNAs) – short noncoding RNA molecules which bind to mRNAs and thus regulate gene expression – were observed in many cancer cells. miRNA expression profiling is therefore of great interest, but current standard methods are still considered rel...

Ribose at the 3′-end of oligonucleotides (oligos) selectively modified by Os(VI)2,2′-bipyridine (bipy) produced two CV redox couples at pyrolytic graphite electrode. Using square wave voltammetry (SWV) 22-mer oligos can be detected down to 250 nM. At mercury electrodes the Os(VI)bipy-oligo add...

Four potential metabolites of the potassium-competitive acid blocker BYK 405879 (1) were synthesized which might be formed in vivo by enzymatic oxidation of the pyran moiety or the methyl groups attached to the (hetero) aromatic system. In all cases, the oxidation of the parent compound 1 was ac...

Glycoproteins participate in various biological events, including disease progression. Currently, there is a pressing need for development of new simple and inexpensive methods for glycoprotein carbohydrate component (mostly oligosaccharides, OLSs) analysis and electrochemical methods were littl...

Alpha-1-acid glycoprotein (AGP) or Orosomucoid is a serum glycoprotein which belongs to the group of acute phase proteins. It is a potential biomarker for inflammatory bowel diseases. In this sense, there is a need for developing fast and cheap analytical methods for diagnosis, prognosis and fol...

Carbohydrate components in glycoproteins play a critical role in health and disease and specificity of glycoprotein biomarkers can be greatly enhanced by analysis of their sugar components containing frequently different isomers. We show that two glycan isomers, 2,3-sialyllactose and 2,6-sialyll...

Altered glycosylation is a universal feature of cancer cells and certain glycans are well-known markers of tumor progression. In this work we studied two glycan isomers, 2,3-sialyllactose (3-SL) and 2,6-sialyllactose (6-SL), frequently appearing in glycoproteins connected with cancer. A combinat...

A convenient route to optically active pyrazolidine derivatives from Pd(0)/(R,R)-Bn-BOX-catalyzed enantioselective cyclization of 3,4-allenylic hydrazines in the presence of organic halides has been developed, the ee value is 75–84%. The absolute configuration of the products was determined by ...