The synthesis of 1,1-bis(4-hydroxyphenyl)-2-phenylethylene, which is of biological interest, has been reported by several authors in the past. In this article an improved method is introduced. Also a protective group which is easily attached and removed is used. This procedure provides milder re...
A new method has been developed for solid-phase peptide synthesis (SPPS) via the Fmoc strategy that allows functionalisation of both the C- and N-terminals of Tyr3-octreotate. N-α-Fluorenylmethyloxycarbonyl-l-threonine allyl ester, the starting amino acid, was loaded onto the 3,4-dihydro-2H-pyr...
The synthesis of Nα-fluorenylmethoxycarbonyl-trans-4-hydroxy-4-O-[(2,3,4,6-tetra-O-acetyl)-α-d-mannopyranosyl]-l-proline allyl ester and Nα-fluorenylmethoxycarbonyl-trans-4-hydroxy-4-O-[(2,3,4,6-tetra-O-benzoyl)-α-d-mannopyranosyl]-l-proline allyl ester is described. Glycosylation using Köni...
Daptomycin, a cyclic lipodepsipeptide antibiotic, has been used clinically since 2003 to treat serious infections caused by Gram-positive bacteria. Although 37 years have passed since daptomycin’s discovery, its mechanism of action is still debated. In this report, the effect of replacing the e...
The maternal transfer and developmental toxicity of chiral contaminants with respect to enantioselectivity have rarely been investigated. Here, the residues and toxicological responses of cis-BF, a typical chiral pesticide, were studied in the progeny of adult zebrafish exposed to cis-BF (0, 20,...
Synthetic pyrethroids (SPs) are broadly used to control pests and have been widely detected in aquatic environments, prompting concern over its risk to the health of non-target organisms. The present study evaluated whether long-term (60 d) exposure to low doses (0, 20, 100, and 500 ng/L) of cis...
Two monovalent ion porters, the putative Na+/H+ antiporter (NapA) of Enterococcus hirae and the putative K+/H+ antiporter (KefC) of Escherichia coli, are similar in sequence throughout their hydrophobic domains. These two proteins, which comprise a novel family of transporters unrelated to the p...
KEA genes encode putative K+ efflux antiporters that are predominantly found in algae and plants but are rare in metazoa; however, nothing is known about their functions in eukaryotic cells. Plant KEA proteins show homology to bacterial K+ efflux (Kef) transporters, though two members in the Ara...
It has been recently reported by Palmisano et al. (2015) [1] that the oxidation of 2-methoxybenzyl alcohol (2-MBA) to 2-methoxybenzaldehyde (2-MBAD) proceeds in water under near-UV light with an unexpected catalytic effect of 2-MBAD. In order to investigate the catalytic role of aldehyde in phot...
Nitrogen dioxide is usually considered as a mediator between dioxygen and the catalysts for the aerobic oxidation of alcohols. Here, we report that nitrogen dioxide has an ability to catalyze this reaction, which not only avoids the use of the cocatalysts or the acids in traditional approaches, ...
Hydrogen bonding between substituted benzyl alcohols (benzyl alcohol, o-aminobenzyl alcohol, o-chlorobenzyl alcohol and o-nitrobenzyl alcohol) and acrylic esters (methyl methacrylate, ethyl methacrylate) is studied in carbon tetrachloride by using the FTIR spectroscopic method. Utilizing the Nas...
The spectroscopic features and molecular structure of 5-fluoro-6-(4-methylpiperazin-1-yl)benzo[d]thiazol-2-amine (2-ABT) have been determined. Single-crystal X-ray analysis and vibrational spectroscopy have revealed the existence of 2-ABT in the amino tautomeric form in the solid state. Properti...
The benzo[d]thiazol-2-yl(piperazin-1-yl)methanones scaffold has been identified as new anti-mycobacterial chemotypes. Thirty-six structurally diverse benzo[d]thiazole-2-carboxamides have been prepared and subjected to assessment of their potential anti-tubercular activity through in vitro testin...
In the present work, Cu(II) complexes of 2-(2-benzo[d]thiazol-2-yl)hydrazono)propan-1-ol (L1) and 3-(hydroxyimino)-2-butanone-2-(1H-benzo[d]thiazol-2-yl)hydrazone (L2) are synthesized and characterized by various spectro-analytical techniques. The structure of Cu(II) complex of L1 i.e., [CuL1Cl2...
Three distinct, hydrogen bond associated N-(benzo[d]thiazol-2-yl) acetamides were synthesized by refluxing benzothiazoles with acetic acid. The nature of the assemblies was characteristic to the substituent in the benzothiazole moiety. In N-(benzo[d]thiazol-2-yl)acetamide, water acts as a bridge...
A catalyst-free, environmentally benign, and simple one-pot multi-component protocol has been developed for the efficient synthesis of novel (benzo[d]imidazo[2,1-b]thiazol-3-yl)-2H-chromen-2-one derivatives in excellent yields using ethanol-PEG-600. This novel and green protocol have the advanta...
An efficient and novel 2,5-bis(benzo[d]thiazol-2-yl)phenol scaffold-based ratiometric fluorescent probe BTP-Cys for the sensing of cysteine has been developed. The probe BTP-Cys with acrylates moiety, as recognition site, has been successfully constructed on account of the excited state intramol...
The effort was taken to develop a series of benzothiazole and quinoline fused bioactive compounds obtained through a four-step synthetic route using a range of substituted acetoacetanilides. Achieved N-(benzo[d]thiazol-2-yl)-2-hydroxyquinoline-4-carboxamides (6a-l) were produced up to 96% of yie...
A new optical sensor for highly sensitive and selective determination of ultra-trace amounts of mercury(II) ions is developed. This optode is based on the interaction of 1,15-diaza-3,4,12,13-dibenzo-8-oxa-16,18-pyridin-5,1-dithiacyclo octadecane-2,14-dione with Hg(II) in plasticized (2-nitrophen...
A sensitive new bulk optical sensor (optode) for mercury(II) is described. This optode is based on the interaction of hexathiacyclooctadecane with Hg(II) in plasticized polyvinyl chloride (PVC) membrane incorporating chromoionophore V as lipophilic H+-selective indicator. The membranes were cast...
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