A5072969458- Cyclopropane Reaction Mechanisms
- Synthetic Organic Chemistry Methods
- Catalytic C–H Functionalization Methods
- Oxidative Organic Chemistry Reactions
- Biochemical and Molecular Research
- Marine Sponges and Natural Products
- Traditional and Medicinal Uses of Annonaceae
- Radical Photochemical Reactions
- Catalytic Alkyne Reactions
- Asymmetric Synthesis and Catalysis
- Carbohydrate Chemistry and Synthesis
- Phytochemicals and Antioxidant Activities
- Plant biochemistry and biosynthesis
- Plant-derived Lignans Synthesis and Bioactivity
- Antioxidant Activity and Oxidative Stress
- RNA Interference and Gene Delivery
- Chemical Synthesis and Analysis
University of Almería
2006-2013
The unprecedented homolytic opening of ozonides promoted and catalyzed by titanocene(III) is reported. This novel reaction proceeds at room temperature under neutral, mild conditions compatible with many functional groups provides carbon radicals suitable to form C-C bonds via both homocoupling cross-coupling processes. procedure has been advantageously exploited for the straightforward synthesis natural product brittonin A.
The cytotoxic effects of extracts the tomato variety "Racimo" have been evaluated through use 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay at several concentrations. Three extracts-ethanol-water, petroleum ether, and in vitro digested tomato-exhibited cytotoxicity against proliferation cultured cancer cell line HT-29. concentration that caused 50% inhibition growth occurred (GI(50)) different for HT-29 cells was 62.5 μg/mL ether extract 87.0 extract. For...
A concise total synthesis of the furano-sesquiterpene (±)-euryfuran, a bioactive metabolite from some marine sponges, is presented. The key step highly diastereoselective titanium (III) catalyzed radical cyclization farnesol epoxyderivative. Keywords: Titanium, reactions, cyclization, diastereoselectivity, farnesol, furanosesquiterpenes
Octaethylporphyrin and tetraphenylporphyrin Ir(I) Ir(III) complexes are useful catalysts for intramolecular C–H insertion processes of stabilized diazo compounds. While the complex TPP[Ir(CO)<sub>3</sub>]<sub>2</sub> is most efficient selective catalyst, others afford mixtures cyclization dimerization products. The effect solvent polarity on selectivity reaction also presented.
Condensation of 2H-benzo[g][1,2]oxasilocines with aromatic aldehydes in the presence boron trifluoride affords mixtures cis/trans 2-phenyl-3-vinylchromans moderate yields. These can be transformed into homopterocarpans, a synthetic group substances homologous to natural isoflavonoid pterocarpans.
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 100 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 200 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”