Accurate intensity measurements were performed for several lines of the two main isotopologues of carbon dioxide, using cavity ring down spectroscopy. Absorption spectra of the R52e line at 6112.8902 cm-1 (30014←00001 band) of 12CO2 and the P6e line at 6114.8580 cm−1 (30013←00001 band) of 13CO...

It is found that a thin coating of cuprous thiocyanate suppresses photocorrosion of cuprous oxide in aqueous KCNS. The method of deposition of cuprous thiocyanate on cuprous oxide surface and the performance of a photoelectrochemical cell based on this electrode are described.

Two novel starburst donors based platinum acetylide sensitizers with π–π conjugated span group (2-vinylthiophene) were synthesized and applied in dye-sensitized solar cells (DSSCs). The photovoltaic performances of sensitizers were investigated by photophysical, photovoltaic, electrochemical,...

A novel generalized synthetic procedure for bis(acetylide) metallates(I) of the coinage metals [K(THF)n(18-crown-6)][R-C≡C-M-C≡C-R] (M = Cu, Ag, Au) with varying substituents R (R = Fc, Ph, tBu) was developed. The synthesis proceeded under mild conditions by deprotonation of the corresponding ...

A method for the convenient isolation of acetyldigitoxin from Digitalis mertonensis and D. siberica is described. The former yielded acetyldigitoxin in approximately twice the amount of digitoxin that could be isolated from D. purpurea.

This paper describes the ready separation of acetyldigoxin from acetyldigitoxin when these secondary glycosides are isolated in combination from Digitalis lanata, fresh or dried, containing the maximum amounts of the native glycosides. The initial primary extract used 35% aqueous methanol and en...

The structures and energetics of the dimethylamino substituted cobaltdicarbaboranes (Me2N)2C2Bn–3Hn–3CoCp (n = 8–12) have been investigated by density functional theory. The lowest energy structures are based on the most spherical closo deltahedra in accord with the Wade-Mingos rules. Among t...

Infinite dilution activity coefficients and gas-to-ionic liquid partition coefficients are reported for >40 different organic compounds dissolved in N-[2-(N′,N′-dimethylamino)ethyl]-N,N-(dimethyl)-1-propanaminium bis(trifluoromethylsufonyl)imide, N-[2-(N′,N′-dimethyl-amino)ethyl]-N,N-(dimeth...

Lagenaria siceraria is an important source of primary and bioactive metabolites, and is extensively used in the food and pharmaceutical industry. The tetracyclic triterpenoid cucurbitacin I (CUI) is well-known for its potential bioactive properties. In the present investigation, CUI was extracte...

Integrins are essential protagonists in the complex multistep process of cancer progression and are thus attractive targets for the development of anticancer agents. Cucurbitacin B, a triterpenoid purified from the leaves of Tunisian Ecballium elaterium exhibited an anticancer effect and display...

Cucurbitacin E is a potential drug candidate due to its anticancer activity, recognition of its molecular targets, and synergism with other drugs used for cancer treatment. However, the use of cucurbitacin E in clinical practice is not possible because of important knowledge gaps in its preclini...

BackgroundCucurbitacin E (CuE) is an oxygenated tetracyclic triterpenoid isolated from the fruits of Citrullus colocynthis (L.) Schrad.

Natural products have been known as a fundamental source for drug discovery leading to the evolution of Biological Oriented Organic Synthesis (BIOS) approach to assemble natural product mimics. Herein, a series of Cucurbitacin inspired estrone analogs was assembled to generate 18 novel synthesiz...

Cucurbitacin B (CuB) and cucurbitacin E (CuE) are tetracyclic triterpene compounds from Cucurbitaceae, and the main bioactive compounds of cucurbitacins tablets that used to treatment of chronic hepatitis. Pharmacological research has been very comprehensive, and there are few studies on pharmac...

BackgroundThe consumption of the fruits of cucurbitaceae plants is widely popular among Indians due to their various nutritional and medicinal purposes. Some of these plants are well reported in Ayurveda due to their potential therapeutic importance. In particular, the plants of this family are ...

Resveratrol (R) was lipophilized by esterification in order to facilitate its application in a wide range of products and to possibly enhance its bioactivity. Twelve resveratrol derivatives were prepared using acyl chlorides of different chain length (C3:0–C22:6) and their antioxidant activitie...

The impact of iron compounds with different solubilities on lipid oxidation was studied in the presence and absence of association colloids. Iron (III) sulfate only accelerated lipid oxidation in the presence of association colloids while iron (III) oleate accelerated oxidation in the presence a...

Poly-silicic-cation coagulants are increasingly being used to remove the bio-refractory organic compounds from industrial wastewaters, yet the research on the interactions between the coagulants and organics remains limited. In this study, three composite coagulant poly-aluminum-silicate-chlorid...

N-Succinylamino acid racemase (NSAAR) with N-acylamino acid racemase (NAAAR) activity together with a d- or l-aminoacylase allows the total transformation of N-acetylamino acid racemic mixtures into optically pure d- or l-amino acids, respectively. In this work we have cloned and expressed the N...

The production of d-aminoacylase by Alcaligenes denitrificans and Alcaligenes faecalis has been studied. The enzyme was inducibly produced and N-acetyl-d-leucine and N-acetyl-d-valine were the most effective inducers. d-methionine, d-valine, d-phenylalamine and d-leucine were produced by the enz...