نتایج جستجو برای: ethyl maltol
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The aim of this study is to evaluate the bioactive compounds in the ethanolic leaf extract of Azima tetracantha by using Gas chromatographyMass Spectrometry (GCMS). Azima tetracantha leaves were collected from Ariyalur District, Tamil Nadu. The dried leaf powder was extracted with the solvent ethanol by using Soxhlet apparatus. One microlitre of the extract was subjected for analysis by GCMS to...
محافظت و محافظت زدایی گروه های عاملی از مراحل اجتناب ناپذیر در سنتز ترکیبات چند عاملی می باشد. محافظت گروه های عاملی الکلی در شیمی آلی مدرن بسیار حائز اهمیت است. فرمیل ها، یکی از گروه های محافظت کننده اساسی الکل ها محسوب می شوند. از طرف دیگر، توسعه و کاربرد کاتالیست ها و حلال های دوستدار محیط زیست و مزایای واکنش های بدون حلال مانند سرعت بالای واکنش، خالص سازی آسان، کاهش آلودگی، راندمان بالای مح...
abstract: electrical sensitivity of a boron nitride nanotube (bnnt) was examined toward ethyl acetylene (c4h6) molecule by using density functional theory (dft) calculations at the b3lyp/6-31g (d) level, and it was found that the adsorption energy (ead) of ethyl acetylene the pristine nanotubes is about -1.60kcal/mol. but when nanotube has been doped with si and al atoms, the adsorption energy ...
conclusions this report is the first to document other treatment possibilities for pressure ulcer and/or stasis dermatitis in cases where the use of topical applied ointments and medications is difficult. this new therapy may therefore help physicians to treat pressure ulcers and stasis dermatitis. case presentation case 1: a 21-year-old japanese female with lower-body paralysis. pressure ulcer...
The biochemical activity and morphology of control and streptozotocin-diabetic rat liver Golgi complexes were previously investigated by us under influence of some vanadium [V(IV)] compounds. The effectiveness of these derivatives depends on the kind of complexing ligands. This paper presents the investigation of the effect of bipyridyl, the ligand of a new vanadium compound, tested by us with ...
Ternary complexes of copper(II) and zinc(II) metal ions with the ligands maltol; 3-hydroxy-2-methyl-4H-pyrone (MA) and glycylglycine (GG) have been synthesized and characterized by IR, H NMR, UV-Visible, mass spectra and TGA techniques. The complexes have been screened for antibacterial activity and the results are compared with the activity of free ligands. Increased activity of ternary comple...
The reaction of the dimer [Rh(III)(pentamethylcyclopentadienyl)(μ-Cl)Cl]2 ([Rh(III)(Cp*)(μ-Cl)Cl]2) with the hydroxypyrone ligands maltol and allomaltol affords complexes of the general formula [Rh(III)(Cp*)(L)Cl] under standard and microwave conditions. The organometallic compounds were characterized by standard analytical methods and in the case of the allomaltol derivative in the solid state...
The understanding of the biotransformations of insulin mimetic vanadium complexes in human blood and its transport to target cells is an essential issue in the development of more effective drugs. We present the study of the interaction of oxovanadium(iv) with human serum albumin (HSA) by electron paramagnetic resonance (EPR), circular dichroism (CD) and visible absorption spectroscopy. Metal c...
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