The extracts of Chinesc red ant formica aquilonia were screened fbr cytotoxicity, antioxidation and antiinfiammatory properties, prolyl oligopeptidase (POP) inhibition, and the effect on the catecholaniinc secretion, Dried ants were successively extracted with hexane, ethyl acetate, aqueous acetone and distilled water, Both the hexane and ethyl acetate extracts exhibited a high level of POP inh...

The cytotoxicity of three extracts (petroleum ether, ethyl acetate and n-butanol) from a plant used in folk medicine, Marchantia convoluta, to human non-small cell lung carcinoma (H1299) and liver carcinoma (HepG2) cell lines was tested. After 72-h incubation of lung and liver cancer cell cultures with varying concentrations of extracts (15 to 200 microg/mL), cytotoxicity was determined by the ...

The objective of the present study was to investigate the anticancer activity of Chinese medicine Caulis Spatholobi extract on multicentric osteosarcoma cells. Ultraviolet spectrophotometry was used to determine the total flavonoid content in each sample; vanillin sulphuric acid assay was used to determine the condensed tannin content in each sample; and the varying degrees of inhibitory activi...

Hexane, ethyl acetate and methanol extracts of Onopordum espinae leaves were investigated for their antibacterial activities against Bacillus cereus, Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa, and Salmonella enteritidis. Hexane and ethyl acetate extracts were toxic to Gram-positive bacteria with inhibition zone diameters ranging between 12 and 30 mm....

The aim of this review is to cover recent advances in acylation chemistry (peptide, amide, and ester bond formation) in which ethyl 2-cyano-2-(hydroxyimino)acetate (Oxyma)-derived reagents are involved. The distinct applications of each class of Oxyma derivatives will be discussed and compared to the behavior of reputed standards in the field. Outline

The reaction of alkaline 2,4-dihydroxyquinoline 1 and 1-tetralone 2 in 2% sodium hydrox­ ide solution with vinyl acetate afforded a brown solid 3, which on treatment with phospho­ rous oxychloride yielded 2,4-dichloro-3-[l’-(l-chloro-naphth-2-yl)ethyl]quinoline (4). The same reaction of 1 and chromanone 7 with vinyl acetate afforded 2,4-dichloro-3-[l’-(4-chloro2-methyl-chromen-3-yl)ethyl]quinol...

Chamaemelum nobile (Asteraceae) commonly known as 'Roman chamomile' is a medicinal plant used for numerous diseases in traditional medicine, although its anticancer activity is unknown. The present study was carried out to investigate the anticancer as well as apoptotic activity of ethyl acetate fraction of C. nobile on different cancerous cell lines. The cells were treated with varying concent...

Objective. To investigate the inhibitory effect of ethyl acetate extracts of Impatiens balsamina L. on prostate cancer cells. Methods. Impatiens balsamina L. was extracted to get water, ethanol, oil ether, ethyl acetate, and butanol extracts. CCK-8 assay was used to detect the inhibitory effect. Apoptosis rates and cell cycle distribution were detected by flow cytometry. Transwell assay was per...

Antioxidants are chemicals that possess bioactive constituents which usually allow them to fight against free radicals. Antioxidant and phytochemicals properties of the leaves Synsepalum dulcificum were investigated using ethyl-acetate, ethanol methanol extracts. 2, 2-diphenyl-picrylhydrazyl (DPPH) scavenging activity, total antioxidant ferric reducing power (FRAP), flavonoid phenolic content w...

DL-Phenyl alanine labeled with carbon-14 in the α-position has been synthesized from ethyl[2-14C] acetate as part of a 6-step sequence.