Although various parts of J. curcas (Jatropha curcas L., Euphorbiaceae) have long been used as traditional folk medicines for their antiviral, analgesic, and/or antidotal efficacies, we are the first to investigate the role of anti-carcinogenicity of isoamericanol A (IAA) from the seed extract. ...

An efficient and green bioprocess is herein reported to obtain halogenated nucleosides by transglycosylation using immobilized lactic acid bacteria (LAB). Lactobacillus animalis ATCC 35046 showed a yield of 95% at 0.5 h to synthesize 5-fluorouracil-2′-deoxyriboside (floxuridine). Calcium algina...

The molecular structure, conformational stability and vibrational frequencies of tert-butyl N-(2-bromocyclohex-2- enyl)-N-(2-furylmethyl)carbamate were investigated by utilizing the Hartree-Fock (HF) and density functional theory (DFT) ab initio calculations with 6-31G* and 6-31G** basis sets. T...

A complete product study of the reaction of 3-chloro-1-ethylpiperidine (1) in aqueous sodium-hydroxide showed the formation of three bis-(β-aminoethers), 2,2′-bis-(N-ethyl-2-pyrrolidinomethyl) ether (6), 3-(N′-ethyl-2′-pyrrolidinomethoxy)-N-ethylpiperidine (7) and 3,3′-bis-N-ethyl-3-piperid...

Tritium permeation barrier has been developed for mitigating fuel loss and radiological concern at a fuel breeding/recovery system in a D-T fusion reactor. Recent research effort has been dedicated to erbium oxide coatings, and various hydrogen permeation behaviors except for irradiation effects...

Er3+ NPs doped bio-silica borotellurite glasses containing silver oxide were prepared using melt quenching techniques. The silica used was extracted from rice husk by acid leaching process. Optical absorption and photoluminescence properties of the glass samples were studied. The samples were co...

This study used the sol-gel reaction to synthesize an erbium oxide precursor. The precursor was coated on a hydrophilic SiO2/Si substrate by using spin coating technology, which was then processed at the temperature of 600–1100 °C for 45 min to form erbium oxide and erbium silicate thin films....

In this research, the melt-quenching method was used to synthesize a series of zinc tellurite glass systems doped with erbium oxide with the chemical composition of [(TeO2)0.7 (ZnO)0.3]1−x (Er2O3)x at different molar fraction, x = 0, 0.01, 0.02, 0.03, 0.04 and 0.05. X-ray diffraction (XRD), Four...

Point defects created by neutron/electron irradiation often determine the performance and the chemical stability and activity of oxide materials. Oxygen vacancies constitute a common point defect in metal oxides, such as erbium oxide (Er2O3), one of the candidate materials for tritium permeation...

Erbium oxide (Er2O3) coatings are considered as the candidate for tritium permeation barrier (TPB) because of its low permeation reduced ratio. The enhanced adhesion between TPB layer and metal substrate is one of the key issues for the high reliability. In this work, erbium coatings were firstl...

Erbium oxide (Er2O3) has been used in a variety of microelectronic, optoelectronic, thermophotovoltaic, and biomedical applications, and especially in nuclear reactor systems. Electrochemical synthesis of rare earth oxides has conventionally been based upon base generation under the application ...

As a heavy rare earth oxide, erbium oxide (Er2O3) has many attractive properties. Monoclinic Er2O3 has useful properties not found in stable cubic Er2O3, such as unique optical properties and high radiation damage tolerance. In this study, pure cubic and mixed phase of cubic and monoclinic Er2O3...

Erbium oxide has been investigated as a tritium permeation barrier material in a D-T fusion reactor fuel system for more than a decade. Erbium oxide normally forms the cubic phase; however, the uncommon monoclinic phase was formed under ion irradiation or high pressure conditions. In this study,...

In this study, the obsidian (Ob) that is a natural glass were doped with and Cerium oxide (CeO2) and Erbium Oxide (Er2O3) in different amount (0.5%, 1%, 3%, and 5%). Obsidian was grinded and glass powder was doped with CeO2 and Er2O3 via mechanical alloying. The doped glass samples were prepared...

Novel phosphorus compounds of bisphosphoramidate, phosphoramidate and phosphoric triamide derivatives were synthesized using the starting materials PCl5 and POCl3. The products were then characterized by 1H, 13C, 31P, 19F NMR, IR spectroscopy and CHN elemental analysis. It is noticeable that the...

One-pot synthesis of novel phosphoramidates with porphine and nitrogenous drug was accomplished. In the absence of light, MTT test showed that they killed the BEL-7402 liver cancer cells effectively in vitro. The cell viability studied on normal liver and cancer cells showed that porphine phosph...

Trypanosoma cruzi trans-sialidase (TcTS) is a cell surface protein that participates in the adhesion and invasion mechanisms of the parasite into the host cells, making it an attractive target for inhibitors design. In order to contribute to the knowledge of the interaction between TcTS and thei...

The stereoselective synthesis of chiral β2-homoalanine derivatives with 99% ee by the Rh-catalyzed enantioselective hydrogenation of prochiral 2-aminomethyl acrylates is described. The subsequent transformation to chiral 3-amino-2-methylpropanols is also demonstrated.

A series of new (2,4-dioxothiazolidin-5-yl/ylidene)acetic acid derivatives with thiazolidine-2,4-dione, rhodanine and 2-thiohydantoin moiety (28–65) were synthesized by the reaction of (2,4-dioxothiazolidin-5-yl/ylidene)acetic acid chlorides with 5-(hydroxybenzylidene) thiazolidine-2,4-dione, r...

Recent developments in the total synthesis of bioactive marine fatty acids are described. For the purpose of this review marine fatty acids have been divided into three main groups, namely methylated, methoxylated, and diunsaturated fatty acids. Within the methylated fatty acids the Wittig coupl...